This seems like a good opportunity to talk with the principal, if you haven't already. Communicate that valuable board members are leaving because they are unhappy. Be concrete with him about what you would like, ie, When you do this, it makes board members feel x. Tell him where you would like him to step back and where you would like him to step up.
If you do this in a businesslike, problem-solving and unemotional way (ie, you don't want to sound accusatory, but rather like you're trying to improve a business situation that will benefit both of you), you might create a better situation.
- Craig
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