Somebody from the QL social group invite him to the next gathering, you seem to have plenty of them.

Then more than one person can evaluate this case and report back here with some hard evidence/or just convince the non believers.

Then, as BE said, some proper help can be sorted. There will be more support once some of the regulars here confirm it. Also, more advice might be forth coming once this is confirmed as a genuine concern.

I for one would not like to be in a similiar position, would you? ........... what a nightmare!!!