Yeah it's best just to completely quell that sort of behaviour I suppose. I mean, the reason I play almost exclusively on SpA now, and would buy a reserve slot every week (Now that I know how to use them...

) is because it's an enjoyable playing environment. And it seems like more and more people are showing up here all the time.
The last thing you want is for it to devolve into some kind of Xbox Live hooting dickhole arena. Honestly, I might actually play Xbox Live but it's full of idiots. As soon as me and my pals start speaking on the mic they're all over us. Not that we can't dish it out. And they're not difficult to outsmart cause they're usually either 12 years old or mentally incapable of putting up a decent argument.
It still doesn't change the fact that I don't want to be harassed by every asshole who's Mummy bought them an Xbox for Christmas and that's why I'd much rather be on TF2. And more specifically, on these servers.
So yeah, if people are just going to be calculated dicks and what they do will essentially ruin the mood for everybody then yeah they should be expelled.