I would go "shop" for an MC on your own. I've been on a quest for "MC for 1" for quite a while and finally found someone who I think can help. Working with the wrong person can do more harm than good and H will be turned off. You need to find someone who "gets" H first, and then invite him to come with you.
Don't be afraid to interview the MC's. I would typically send them an e-mail overview before paying anything and ask for their high level take on the situation and what they felt they could do for me (us).
I do think that a good MC would be valuable at this point. H seems to be putting a toe in the water on occasion, so it's a good sign that at least part of him wants to re-engage, as you've picked up on.
Accuray
Married 18, Together 20, Now Divorced M: 48, W: 50, D: 18, S: 16, D: 12 Bomb Dropped (EA, D): 7/13/11 Start Reconcile: 8/15/11 Bomb Dropped (EA, D): 5/1/2014 (Divorced) In a New Relationship: 3/2015