Leon,I agree that this is the best way to run this forum. You are not responsible (legally or ethically) for what members say. If this person is so injured by what someone said about him then he should respond to that board member, not to you. He sounds pretty thin-skinned to begin with.
In any case,we're all adults here, and we should be able to defend ourselves and our opinions without crying to you every time someone says something about us that we don't like.
Now if you will excuse me, I have to go bid in the REA.