I think you are worrying yourself a little to much on this.
The laws for Equitable distribution were designed to make things fair for both parties. There is no way you will end up with all the debt unless he files for BK and if he does, the you may have a problem because the debtors only have you left to come after and if you have income, they expect to get paid. If, you cannot pay all the debt and qualify for BK also, then you should jump on his BK bandwagon and let him pay for it. If, he says he is goinf BK, be nice and say "I think this is a briliant idea! when can WE get it started? Let me know when I need to come and sign the papers.
Then, lets see if he comes back and needs money for a lawyer to file it. If so then he is blowing hot air.
I know how you feel about busting your butt all your life and then ending up like this. I have done the same and now, I am heading for BK because the judge ordered me to pay $1600.00 a month more in obligations then I have income. I am living off credit cards which will end up in BK before my divorce is over. And, I will lose the house we bougth a week befoe she files for which we paid 50K down on from my IRA. I expect to lose it all becasue I am a man so, you really have nothing to worry about. Just go into court and stand tall and let them know you will not allow yourself to be screwed over. Just make sure your professional and keep your cool. do not sign anything you are not happy with.
BTW, it does not matter where your debt came from during your marriage. It is still marital debt. You made the mistake of marrying this guy just as I made the mistake of marrying my wife.
I would suspect that when this is all over and done with, you will be splitting the debt unless, there is property involved. If, you get the property and there is any equity in it, then he would get credit for giving you his equity by moving some of his bedt to you.
This is only fair. If, you want to stay out of BK and lower your debt and you have equity in a home, you should sell it and pay down your debt and start over withyour life. even if it means a smaller home or apartment living. Livng with financial stress is no fun.