I get that you're a VP but, as stated above, there has to be a way to moderate the AMA area in a fair way.
Maybe you could place a warning on a post about cleaning up the poster's act or the thread will be cleaned up? If you were to do that, with maybe a short what's wrong, it might make a difference. Then, if the conduct doesn't change, you or Ken could take action as it wouldn't be without a prior warning while, at the same time, the person who's being warned could have the chance to reply as to why their post is appropriate
Just a thought