Farmgirl, I would let the therapist use the stick, and you use the carrot. If your H is truly making progress, as you say, you don't want to slow down his momentum, and discourage him. You don't know what his potential is.
It sounds like you need a more objective IC, or one who is willing to try.
You don't want to act-out your ambivalence in a R you're trying to heal. Ambivalence is not a relational issue, but yours to work-thru in IC and through other expressive means--writing, art.
The fact you're in MC already sends the message to your H, that you have serious concerns.
CL
CL 53 W 54 M 20 yrs. 03'-09' Separation + Old Patterns + GAL 10-14' Piecing
"The Master allows things to happen. She shapes events as they come."