To update, I emailed H this morning and told him I thought that our MC is doing more harm than good. I haven't heard back if he agrees yet.
However, a friend called me today with some kids'-school related business. I had to apologize for not being on top of it because I'm been really distracted. She wanted to know if I was ok, and since she is a therapist herself, she saw right through my feeble "fine" and asked what she could do to help me.
I have not told a single person about this, aside from the MC and my posts, but I broke down and told her about the therapist we're seeing and what's been going on. She agreed that the current MC's approach is not what we need at all; she knows him from years ago and was surprised by the things he's said to us. She knows another therapist who has a totally different attitude, one who is committed to helping marriages rather than just helping individuals who are unhappy in marriages (i.e. there's the door if you want out.)
She's going to call that therapist and see if she's taking patients, then get back to me later today.