Well this just sucks
Apparently old twitter posts of his where he made jokes about pedophilia and such were dug up and the House of Mouse saw fit to fire him even though he's come out and acknowledged those very same tweets and has said he's a completely different person now.
This seems pretty similar to the whole Josh Hader thing. At least Gunn seems sincere about everything that came out. I feel like Disney may have jumped the gun (no pun intended) a bit here but for
PR reasons it had to be done I guess.