The mistake of Mr. Sanders Winnie The Pooh creepypasta

The Mr. Sanders plaque over Winnie's house always perplexed me as we never saw who Mr. Sanders was. The most agreed explanation is that he was a reference to a real person called Frank Sanders.
I wish that were the case except if the information I've gathered was false which it could have been...
Getting back on track once I worked at the animation division of Disney. My job was a dream come true. I made animated projects and participated in a few famous Disney movies.
At some point I pitched the idea of a new Winnie the Pooh movie about Mr. Sanders. However the CEO told me that there was already a short film about that, but it was too disturbing for children and it was created on April fool's, making everyone think that it was a sick joke.
Whoever created it was wiped out from all employee records but he wasn't fired; he instead retired on his own accord with one of the copies of his short film.
That director thought it was his greatest creation and somehow the CEO had the last copy. For that he made a deal with the employee that only two copies would be made- one for him and one for archiving.
He askd me if I wanted to see it and I said yes. It started with the classic song of the 100 Acre Woods with the names of the makers of the short. The camera went through the forest and showcased the characters, and then a "50 years earlier" transition took place.
An adult man wearing a scientist coat entered Pooh's treehouse and added the infamous Mr. Sanders sign above the door.
The man was alone, seemingly lost, so he built a house inside the tree and added a lab in it. He wanted to have friends as he was lonely as well.
So he made plushies that were the beloved characters that we all now and love, but they weren't alive yet. For that he had to create organs and bones as well as muscles which he already had in a bag. Now where did he get those?
They didn't show any footage of that but instead Sanders said it and wrote it on his diary.
Dear diary, I collected these parts from my relatives which are no longer with us due to accidents and deadly illnesses. I lost them all and everyone thought I was crazy, but I couldn't blame them so I ran away into this forest to restart my life.
He put the organs, bones and muscles inside the plushies and reattached them together. They were living beings and made their own houses while learning who they were of. Sanders noticed that the characters remained young and that somedays some of them were annoying.
He taught them what was right and wrong and he desired to keep them near him at all cost, so he made the Woozles and Heffalumps, told them about their terrifying habits and released them in the unexplored forest all around the friendly 100 acre woods.
The characters were stuck there out of fear and the presence of monsters.
Also Owl wasn't in all the Pooh movies because Sanders thought he was too smart. Sanders desired to be the one and only genius so he took Owl apart and fed him to the monsters. This actually contained gory imagery but it was still cartoonish.
Mr. Sanders ended up leaving and moving his stuff out of there so that he didn't get chased out again.
Pooh reclaimed the house after he was gone and Christopher Robin came in and remade Owl from his consciousness. He did not know about Mr. Sanders but he lived in peace with all of them.
My opinion on Winnie changed drastically after viewing this. I didn't know that it could go this dark. I guess I am moving on to another idea.