Is there a way to remove myself from the mortgage while keeping interest in the property until we sell it?

This has to do with real properly from a divorce. I am currently in a legal agreement with my ex-wife for the home that we purchased when we were married. I remained on the title, and agreed that she will maintain the house and pay for the property until a specific date. I am having a hard time getting credit, due to this property being on my credit report and my low income. Is there a way to remove myself from the mortgage, so that it does not look like I am financial responsible for the property (which I am not), and at the same time keep interest in the property until the time that we agreed to sell it? Is there a legal process or documentation that will accomplish this?