Hi there:
you have many tools available. You can have his SS garnished, you can have his Jaguar seized, you can have his bank accounts frozen, you can have his drivers' license suspended, you can have his passport suspended... lots of things. You may want to visit your local courthouse for the forms to get this started, but an attorney would be able to get this done with the least amount of problem. Call your courthouse ahead of time to check, but most counties will also have services available to help with family law matters. Once you get the ball rolling and get some of your money back, I would also suggest that you get an attorney to prosecute him for contempt of court.
Attorney
Attorney experienced in family, probate, criminal, and personal injury law.