ROMB, I still think you're doing a great job DB'ing! Good to see you're DB'ing other family members as well
From what I can see, I would agree with lc4 - your H is still emotionally invested in the M to some extent. I think he is still on the self convincing pattern. And I think you're doing the right thing by shutting down the conversation when it starts going South. You're not taking the bait. At that point, probably nothing good is going to come out of the conversation.
I am also pleased to see that lc4 paid you a visit. I, too, see some of the similarities in the situations.