My ex husband stated that he did not want anything when we got divorced. I aksed him to sign a piece of paper stating that I would be awarded the marital home. He did and then 2 days after the fact, he met me at a notary where we signed it again. He has since changed his mind and now wants half. I am being told that a judge may throw out the document because he was not getting anything in the document. How is that possible? He not only signed it but drove himself to the notary after the fact. Help!