Its time for a reality check. Unfortunately there are people out there who are just so darned determined NOT to pay the other party (or anything that benefits the other party) that they will tank their own financial lives if they have to, in order not to pay. Anyone who is willing to say "f" the judge is likely to be one of those people.
Therefore, you really need to find a way to get your life in order so that you can manage without any money from him, and so that anything that you ever do receive from him will be more of a "bonus" than something relied upon.
One option might be to file contempt against him for everything that he is doing wrong, and then ask the judge as part of that case to order that you have sole decision making regarding selling the house and that you can do so without your ex's participation or signature. Another option might be to give up on the house (depending on how much equity actually exists) and simply get yourself a place to live that is close to other people, jobs and public transportation. You may have to borrow money from family to do that, or sell things you don't want to sell in order to do that, but it may be your best choice. The house may eventually get sold and you may eventually get your share, but don't rely upon it.
Another option might be to take in a roommate or two to help with the expenses until the house is sold if you do keep the house for now.

