Are you sure he wouldn't help with the repairs and sale of the house? If you sell it before you D (if that happens), then it's still half his. I'm in Ohio- here, the standard is either buy out the other person or sell the house and split the equity, if there is any.
Why wouldn't he help with repairs and selling it? Have you asked him? If not, you may just be jumping to negative scenarios in your head. Makes sense to me, that if he has an investment, he would do everything possible to get as much money as possible. (But, then logic doesn't always win out with a WAS! )
I've bought and sold 2 houses on my own- as a single parent. You can do it! (Find a good realtor and your role could be as minimal as possible).
Hang in there!
Me: 39 H: 45 Second marriage for both H left 12/2013 M:4 T:5.5