Phineas and Ferb Lost Episode

Phineas and Ferb is an original cartoon on Disney Channel, created by Dan Povenmire (you know, that guy who used to work on Family Guy) and Jeff "Swampy" Marsh. What isn't known about the series is that both creators widely hate Disney monopolizing it, and the show's original concept goes beyond just a children's cartoon. Once, an episode about Dr. Heinz Doofenshmirtz's real intentions was produced secretly by a good part of the staff who ran the risk of being fired without thinking twice. Even some of the original voice actors were involved.
 The episode was eventually leaked it were a whisk. My brother insisted me to examine it or the CPU was going to literally burn up. Anyways, I was browsing this online forum when I discovered a post about an unreleased episode of Phineas and Ferb. Curious, I clicked on a download link included by the poster. I had some time to download it before having to visit my grandparents' house. We got back at around 1:00 AM. As soon as I got home, I started the episode and, as expected, my computer kept making that hideous noise.
The episode was called "The Horrible Death of Phineas" and, according to the summary, this was an alternative episode to the one where they're finally caught and send to Camp Smile-Away.
The episode began as usual, with both Phineas and Ferb having Isabella's troop help them modify their family car into a flying machine. Also, Ferb was building an airport tower for the car. This time, a huge crowd is present to witness the completed masterpiece.
Meanwhile, Perry is called upon by Major Monogram to fight Doofenshmirtz. He tells Perry that Doofenshmirtz is planning to destroy the entire Tri-State Area using an atomic bomb and he must stop him. When Perry goes to defeat Doofenshmirtz at his headquarters, the doctor explains that he's truly fed up with being treated like an imbecile and he plans to kill everyone by detonating a nuclear warhead. Suddenly, Doofenshmirtz drew a pistol and opens fire against Perry, who is forced to run away because Perry can't fight him while he's holding a weapon. The gun is real, as it made holes in the lair's walls and ceiling. His escape followed with a rather demented and cruel, red-eyed Doofenshmirtz who had an enraged expression on his face. I was completely shocked by the overall depiction of him. It appeared as if Doofenshmirtz had finally gone mad!
Doofenshmirtz chased after Perry during a short sequence and he is almost killed, but luckily manages to avoid the shots. When they reached Phineas' backyard, Candancs and Ferb's invention as in every episode. Soon, Phineas walks towards his mama to show her the flying car. However, in that exact moment, Doofenshmirtz opens fire and Perry dodges the bullet. A slow-motion sequence plays as Doofenshmirtz accidentally shoots Phineas. When the bullet hits him, everything turned monochrome as "Hide and Seek" by Imogen Heap played. Phineas was now lying in the lawn, but with a pool of blood drawn in the habitual Phineas and Ferb style. The video goes back to color when Phineas was in the lawn and it's noticeable: a bright red puddle of blood. The crowd glares, horrified at Doofenshmirtz, and the scene cuts abruptly after showing Phineas lying in a puddle of his own blood, staring at the sky. It was here that Act One ends.
Act Two started with a funeral, and now everything seems extremely depressing. The mortuary was mostly black and the stained glass windows, which enlighten the room, were a depressing monochrome tone. Candace, Linda, Lawrence, and Ferb all looked very forlorned. The explorer troop were lamenting as well, and the camera focused during two insufferable minutes of Isabella crying inconsolably. It sounded real, as if Isabella's voice actress was actually crying while filming the episode. Candace, in extreme grief, regrets about this while furiously hitting Phineas' coffin, crying that this wouldn't have happened if she didn't try to catch them. Act two cuts abruptly to black.
Act Three beings with the text "Two Days Later..." on which Phineas' house is seen from the outside, but it's cloudy and gloomy. Candace is in her room, extremely stressed, with a rigid smile and hanging a rope on the ceiling while humming the Beatles' song "Yellow Submarine". Soon, Jeremy enters Candace's house through the backyard and goes into the kitchen. After offering his condolences to Linda, he asks for Candace. Linda happily tells him that she's upstairs. But when Jeremy enters her room, he sees with horror that Candace hunged herself and died just a few minutes ago. Jeremy takes down the corpse and passionately kissed it. However, when Linda enters to see if everything is alright and after seeing this, screams "Jeremy...how could you?" thinking that Jeremy choked her to death.
After that, it cuts to a scene where both Phineas' parents, Ferb, Isabella, Baljeet, Buford, Doofenshmirtz's ex-wife Charlene, Vanessa, Major Monogram, Carl, and Perry are inside a state prison with Doofenshmirtz strapped to an electric chair. All of them have twisted and sick smiles with the purest, unhealthiest, sadistic joy. He begs for mercy, but Major Monogram simply orders to proceed with the execution. Perry, smiling in a sick and morbid way, switches on the chair. Right before his death, a sequence of real photos appeared on screen. They depicted a man wearing a lab coat and a little girl playing in a park. Although the actors didn't resemble Doofenshmirtz or his daughter, Vanessa, they clearly represented them. After that, the last thing he sees was Vanessa kissing passionately with her mother.
Doofenshmirtz finally dies in a brutal way: electrocuted on a slow, lethal voltage to lengthen his suffering. At the end, Ferb simply states: "Irony is cruel, but not as much as Hell." The episode ended with Doofenshmirtz's lifeless body being thrown on a pile of decaying corpses, along with Jeremy's fresh corpse of Bel-Air.
The next morning, I looked again for the episode. However, the user was banned and the file possibly no longer exists.