If the assets and debts were allocated in the divorce (as they should have been), then that distribution is final. If your husband wanted to make an issue of this expense, that would have been the time to do so.
These are complex issues, and it is important that they be handled correctly. Therefore, it is important that you consult an experienced family law attorney to find out what options are available to you based on the facts of your particular case.
If you need more information, you can visit my family law blog (www.SCFamilyLaw.com) or our website (www.SpartanburgLawyers.com). I wish you the best of luck.
Ben Stevens