at first it was just a bot... then it became something... it controls the servers now...
So, let me get this straight.
There are 2 Points I can believe in.
1- This is a bot, used as a prank or just left, forgotten, etc.
2- Pixel-fox joined a server, gained access to the server, removed all evidence of presence inside the server, and it's body just floats within the server, unable to be touched by anyone of authority.
Wouldn't you see if Pixel-fox accessed the server via IP, ID, etc.? There's no way this can happen without a trace.
Another thing- Can you gain access to your donation stuff via console? And if you could, would this person have access to the payment players give to you with donations?
There's a possibility that someone just plopped the bot in the minigame and just left it, trying to frame another person for his/her doings.