I am relieved you are no longer doing this program - it sounded a little scary to me and I know there will be better opportunities for you. So proud of you for doing the smart thing AND getting your money back.
As for DH, a big GRRRRR to him. Is he is prime condition himself? Is he highly competitive and thinking that negative feedback will somehow motivate you? Or just talking out of body parts that shouldn't be talking? I'm sure you're not going to take that kind of comment lightly, and I wouldn't either.
I know my DH doesn't always like that our eating habits are different, but he knows better than to say anything since he knows I'm making better choices than him. I never nag him about it or make negative comments to him, though... why demoralize someone that way, especially someone you love?