I wonder if there is a lawyer in that church who could go after this charming couple. From the supplied info it does look like a case of fraud but I am not a lawyer. The church should get their money back and give that house to a family who truly deserves it. If the charming con artists can't get the money back then maybe the state prison would serve as a good home for them. Hey who knows Delores Thompson may like jail better then she did that lovely house. I am sure she would fit in much better too.
I think they ought to chalk it up to an expensive lesson and step away.
It would have been one thing if they took the house, lived there a while, then felt they wanted to go home to NOLA. In this case it seems this was their intent all along (to sell it) and essentially take the church for a ride.