NP, you could say something vague like, "I get the sense you're dealing with something right now, and I hope you're doing OK." I said something like that via email to ex-MC once when he had to cancel at the last minute and got the sense it was something going on with his wife (I believe this was after I knew she was sick). It sounds like he's saying an awful lot to imply something is going on. You shouldn't have to take care of him. At the same time, I know how that instinct can come out. And in this case, with his making comments like that, it seems almost like a gorilla in the room.