Well, you know how that goes: what a person says is not what he means and my guess is that this is the case here. He's basically saying - I'm not there of course so I admit this is wild speculation actually - "Back off. I'm not dealing with that now."
Let me mention a profound but sad truth: sometimes guys will not change without a 2 X 4. Most guys that I know that have improved their health is not through a steely discipline or a lover of their family, but rather from some major health trauma that forced them to change. It's sad but very true.
It sounds like you did get your husband to change a few things, so that's very admirable. But, if he doesn't do it himself, how long will it last? If you've really tried and done all you can, what else can you really do? To me it sounds like he's saying, "You can't make me. I'm not changing now."
I guess what I'm encouraging you to do, and I've mentioned this before, is to take care of yourself. Do the best you can with your husband, but watch after your own health and well-being. Watching a loved one injure him or herself is very painful and disturbing, especially for women.
Again, you've got to focus on stress reduction, cortisol management and positive outlets for yourself to make sure you don't get injured as well. What good is it going to do for both of you to be out of commission?
By the way, I don't mean to sound gloom and doom. Men can and will change. But it seems to take a pivotal event for them generally. Just look at this forum. Most men arrived here because they have erectile dysfunction and related issues. And many of them are now exercising, eating healthy and greatly improving their health. Sometimes you gotta hit us where it counts I'm afraid...