Here's some reasons why he probrably did it:
1) He drank too much RedBull/Mother.
2) He smoked too much dope, got stoned and played ChangedStory.
3) Was so bored he decided the shake things up a little bit to see peoples reaction (worked pretty good if you ask me, because as I've seen so far, I've seen 2 posts saying the same thing about the GM saying this stuff).