One does not need a clinical diagnosis to be mindful of ones own mental health. You may substitute the term 'sanity' if you like: if he needs to step away from the board for his own sanity then by all means he should be able to do so without threads being created with an end at pulling him back in.
I get that you may be still a bit bitter that I called you 'not very bright' or something like that a while ago, but it seems like you're trying a little too hard to misinterpret me in this fred.