The separation agreement created rights between your husband and his ex, but it could not change the rights of third parties, such as creditors. If your husband is the cardholer, he remains liable to the creditor. However, he can sue his ex for breach of contract for failing to pay the debt as provided in the separation agreement, and provided she has some assets, he should be able to recover damages from her.
Lara Stanford Davis
Attorney
The Rosen Law Firm
4101 Lake Boone Trail, Suite 200
Raleigh, North Carolina 27607
NCdivorce.com
(919)787-6668
The response posted above is based upon the limited factual information made available and is not intended as a full and complete response to the question. The only reliable manner to obtain complete and adequate legal advice is to consult with an attorney, fully explain your situation, and allow the attorney sufficient opportunity to research the applicable law and facts required to render an accurate opinion. The basic information provided above is intended as a public service but a full discussion with an attorney should be undertaken before taking any action.