Hi there,
You probably haven't had a chance to call around to see what kind of help is available. Call your power co and ask for assistance. Local churches. Go to food banks for food. Don't spend the cash on that. Go to 2nd-hand stores for clothing and such. Apply for financial aid if at all possible. If you can't house and feed your kids you may have to put school on hold until you can.
Any family that can help you out?

Go to your college's counseling dept. Oftentimes they offer free counseling and have lists of resources to help students exactly like you. You also may get assistance from the state for shcool through job retraining, etc. If your husband won't go to WalMart to get the release, you go get it yourself. You are eligible for benefits that you are currently not receiving.

I would definitely help your husband OUT, the way he came in. It doesn't sound to me like you'd be any worse off without him. But, only you know that for sure.

I certainly wish you all the best and will pray for you as well. School will always be there for you when you are ready. Take good care of you. It's the airplane analogy that I usually tell people. In order to be able to put oxygen on your loved one next to you, you have to put it on yourself first!
XO,
Okie