Levi Porphyrogenitus, on 01 February 2015 - 01:24 PM, said:
I've personally done exactly this only to have one player persistently call out my position to the enemy, even as I'm actively manuevering - I never stopped and I never powered down, and my mech was in good enough shape that I could have done some fine work if I'd managed to catch a lone hostile unawares, yet injured enough that a straight-up fight against somebody who was being fed intel on my position was a foregone conclusion.
and at that point the teammate is now the one griefing, and you report him.