Kongfrontation hijacking

Hello. My name is Alex Dumonte and I am a technician. I have worked at Universal Studios Florida from the year 2002. Before the Kongfrontation ride closed I was hired to repair the animatronics and set pieces to make sure that everything went as planned without incident.
And I of course had to test it the next morning, but before leaving the park I swear that I saw someone entering the Kongfrontation ride even if the park was about to close for the night.
I tried to follow the man, but the door was locked and as I tried to unlock it with a key and pushed, it was stuck in place as if whoever got in barricaded the door with something heavy.
So I had no choice but to leave the park and get a puzzled night sleep as I thought on who could have had done this.
First I thought it was Riley because she wanted to be a technician badly.
She was jealous of my work and she tried to beat me up multiple times in Universal, but guards were always around to stop her.
Maybe she stole the keys from another fellow technician or she somehow got hired and entered the ride to make a better job then I did.
Or maybe it was Eric that tried to break attractions in any way possible. This heist could be his last attempt to start a lawsuit on Universal as he wants the money as his pockets are pretty low.
Or it could have been John Lamar that attempted to do unspeakable things in the park that are in the illegal side. He was kicked and banned from the park, but maybe he found a way to sneak back in to kill me...
I was afraid for the rest of the night. I kept looking around my room just in case, and I rolled the blinds on the window so that I could not see what awaited outside.
I fell asleep and had a terrible nightmare of all these people messing with me mentally and physically. Then my alarm rang and I sighed in relief as it was just a dream and nothing more.
I hurried back to the theme park and it was before it opened. I was ordered to test out the Kongfrontation ride to make sure that I did a good job on repairing it.
I couldn't refuse such an easy task so I entered the ride in the empty cue line and embarked on the aerial tram vehicle.
The special effects worked properly and the sound effects as well.
The one thing that was acting weird was the huge King Kong animatronic as only its eyes moved.
As he tram stopped the animatronic screamed and bit the tram. I screamed in terror as his teeth tore through the roof of the tram. Then it grabbed the vehicle and threw it on the ground.
Right as it hit the ground I tucked and rolled on a gymnastic mat, and I ran into an employees only room.
The animatronic was breaking some props by crushing them and throwing them all over the place.
I had to shut down the ride, so I sneaked to the nearest power switch and someone was following me. He was wearing a full black bodysuit and mask and had a revolver. I hurried and turned the ride off and jumped on the man and disarmed him or her. 
He flipped me off and ran away.
My boss saw the destroyed ride and made this death stare to me.
I tried to tell him that it wasn't me but he was having none of it.
And we found ourselves in court. They called me not guilty as they found out that I repaired the ride, not hijacked it.
But they could not find the hijacker as no clues of anyone else was found inside the ride.
However Universal Studios was in big trouble and they lost a complaint from the United States government for safety reasons. They had to pay up 100,000$
So they had no choice but to shut down the ride. It was quite sad as I grew attached to it.
Please help me find the one that caused it and I'll give him what he or she deserved. I personally think it's one of the three I talked about in the beginning of this post.
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