You will have to put in you income as of now as he will too. You do have quite the mess there. The title company should have not been able to do anything without your signature no matter what he said. They will be in big time trouble and you could probably sue them for it. <--ask your lawyer.
He will probably not have to pay back the 300,000 but with your mess anything is possible. You need to get a good lawyer. He will not get away scott free but the longer you wait the less you will get.
Go to your lawyer right now or tomorrow morning depending when you read this.
-------------------- The problem isn't the game; it is that nobody knows the rules.