Actually, the pseudo-mc is stbxh's idea and I'm pretty sure the C knows the entire sitch. H says that he doesn't want to end up in this situation again and they need to figure it all out to ensure that their R/M will work.
I just think it's crazy when one person is married (or both) to other people to counsel them like that. I know my C says she tells her patients to not even date for a year after the divorce, so I don't think she would take them as clients. (I'm tempted to ask next C session)! Karen