Bah, I say no mercy.
Take him to Sparta!
I would think that most of us here are smart enough to distinguish between the player and patch he wears when he plays... I know personally I'd never hold an entire team responsible for the conduct of one player... can't speak for everyone obviously... but still.
"War must be, while we defend our lives against a destroyer who would devour all; but I do not love the bright sword for its sharpness, nor the arrow for its swiftness, nor the warrior for his glory. I love only that which they defend: the city of the Men of Numenor, and I would have her loved for her memory, her ancientry, her beauty, and her present wisdom. Not feared, save as men may fear the dignity of a man, old and wise." - J.R.R. Tolkien