As ktsnake and PhiPsiRuss so stated, the responsabilty when it falls on Local Chapter Members, it is hard to come down on those that maybe causing problems.
But, when and if, worse case, The Chapter suffers to the point of extinction, then there needs to be a Board. So, set it in place first, that way, the Alum Advisory Board (with some Active Members) can make a judgemental decision if need be before it is handed off to Hdq!
The best thing that can happen, is that the Chapter will continue to grow. Worse case, they will be gone!