Pfffff... the racist thing happens all the time on servers, most of the time it's not terribly intentional it's just a bit of gamers tourettes that many gamers seem to have. It's nothing i've heard from him, but have heard others refer to folks with racist identifiers in a joking manner. That being said, if every slip up got handled with banning, lets just say there wouldn't be many playing on these servers. I've never once heard him make a remark that had anyone in an uproar or legitimately upset about it.

He doesn't seem to get banned, so it shows there's usually someone wanting to join in and play. So maybe he's not leaving to be a dick, but to give others a chance to play as well. Or maybe stuff comes up and he has to step away for a bit, or maybe he just got a bit raged like many do.