You get people like that in every game, the problem is it's so hard to balance teams out, I've tried on the OcUK server, just switching the best guys from 1 side to the losing team. Helped a little, but with the majority of 1 of the teams as moron snipers it doesn't work.
I wouldn't bother trying, they'll just switch teams the next time they die or something. I've enjoyed playing it today, because i like it when my team is under pressure, it mainly means more kills and a high chance of actually proceeding when it get's to the point of pressure, although i've had it today where my teammate has got in my LOS when i was shooting...I was practically calling him every swear word in the book.