Perhaps it was more deeply entrenched for dh b/c he was not a stellar student. I imagine that he could have been dx with a LD but the concept of accepting that the thing wrong with him was not a negative or flaw is not an easy one to swallow for him. He still throws out zingers like, "they've got some of me in them as well. They're really going to struggle"
Cricket2 - I celebrate the growth you've made from your early group 2 days! I suspect you are right that your DH got hit with 'both barrels' of being blocked from learning and getting poor grades as well. And yes, his zingers could pose a problem for the kids. It's hard to change someone else, but I don't think that is a reason not to try. I would be sure to find an opportunity every day to beam at DH whenever he shows any intelligent functioning at all. Perhaps verbalizing your appreciation for his intelligence will catch his defensiveness, but do it silently - he can read your face.
It will take a while, but you do have reality on your side!
Smiles,
Grinity