Your husband already has a mommy and it's not you, so by all means stop paying HIS debts, especially the credit cards, and stop protecting him. He made his bed, let him lie in it.
Furthermore, if he cannot handle his money, you may have to step in and take over being in charge of the household finances for a while until things get caught up. Take away the credit card and hide the checkbook, because from what you have stated, it is just more stress that he has to deal with. His increasing debt also affects your life as well as his, so why not take over?
You may want to suggest that your husband make an appointment with a credit counselor about his never ending debt.
Lastly, if he is freaking out and allowing every little thing get to him, he may be a candidate for anger management classes. There are a lot of them out there that are sponsored by various organizations at little or no cost.