I know that this question was already answered but I'll reiterate it in my own version: He and several other people (won't name them because naming and shaming isn't allowed) got banned for posting racist and/or sexist things (pictures and posts) that made Scawen have to deal with that. They mostly got a 6 month ban.
I know that sexism and racism aren't acceptable, but why a ban? Scawen could've given them at least a 2 or 3 point infraction. But at least Scawen warned us that behaving rudely can get you a "holiday" from the forums.