Ban user from thread and individual thread moderator?

[Curll]

Over the course of time, a thread may become large and a group may use it for their own means. For instance, a group of Red Sox fans have a large thread. But, a few stupid Yankees fans disrupt the thread ever few weeks.

Is there a hack out there, or could one be made, where you could ban a user from an idividual thread and give people the power to ban people from that thread and edit posts in that thread?

That would rock hard!