I'm pretty sure I joined that game too because I get on and I'm constantly hearing people saying thinly veiled insults to their team and one guy flat out insulting his team.
I was going to say something but he stopped after the teams were scrambled. Then it turned into all of the annoying players give their opinions on how each class sucks and so on. So I just left.
EDIT:
By the way, if you see a player who goes by the name of "Sliver", he's one I see on from time to time who has a really bad attitude and likes to insult pretty much everyone unless he's winning. He skating on thin ice when ever I'm on for a kick so just watch him because he probably deserves a ban at some point.