I was thinking it would be a manual thing between Morbie and the people generally acknowledged as clan leaders. Just a "**** has been acting like a dick, here are the logs, could you tell them to knock it off" and "We have never heard of **** and really don't want his behavior to reflect poorly on the rest of us, could you strip his clan tag?"
Of course since I don't participate in clans there is no way of knowing if this is already in place. I am just throwing out ideas as they pop into my head.