Ex's House In Foreclosure... I'm Desperate To Buy A House

15 years ago my husband at the time purchased a home. His name only on the VA loan, my name is on the deed. In 2019 he was arrested and convicted of several felony fraud charges and we were on the brink of losing the house. We took out a 12k loan from the state housing authority, I agreed to sign it on the verbal agreement that I would keep the house. The con man that he is, he ended up refusing to give up the house. Flash forward, he hasn't made a single payment since early 2020... he's missed like 58 payments. Foreclosure started in early 2022 but he kept delaying the trials and ultimately the very last thing on the docket from 4/2024 is that he had the last official ruling granting Foreclosure was returned to sender. So he's essentially squatting in the home with his girlfriend and their 6 kids. I'm in a rental, the same one I've lived in since I left so like 5-6 years. I have absolutely perfect track record of 100% on time payments, EXCEPT the 58 missed payments for that phfa loan. I've had car loans since then, credit cards, etc all on time or paid off completely. He has killed my credit. I'm so desperate to move to a better school district but I keep getting denied because of my credit. They keep telling me to pay it off, Im not exactly rolling in the dough, I cannot just pay 12k for nothing. Do I have ANY recourse? Any suggestions at all? Like I said, I'm seriously desperate.