I'll be the first one to admit/agree that he is no saint, who here is but, if he's not "banned" and, you wanted to "keep the reason private", (reason for...?), why can he no longer access the Discussion Board? Call it what you want but, it sounds like banned to me.
And yes, he did tell me about the PM thing, and the comments that he made. Right or wrong, it wasn't part of "public" forum. What goes on outside the forum should have no impact on a posters ability to post or access the forum, in my opinion.
Dave