I'll say it, as a big ole homo I could care less what he said. Personally I've called my own self even worse names than what he could have said to anybody else. BIg deal. It just sounds like there was a lot more going on backstage than probably just this little scuffle and some of the other cast members were probably responsible for giving him a big ole shove out the door.
He could probably have walked away amicably but "I'm mad as hell and I'm not gonna take it anymore" ... just isn't probably going to be doing much for his career at this juncture.