How can I get my name off my ex-wife's car loan?

Question Details:

While deployed, my wife and I decided to get divorced. The day after we broke up she decided to buy herself a new car, without my knowledge or consent. She traded in 1 of our vehicles for a new one. The original loan had about $10,000 left with a decent interest rate. The new vehicle loan was $25,000 with a terrible interest rate. She used a general power of attorney I gave her before I left to co-sign for me (she would never have been able to afford it on her own). Our final divorce papers say that she is responsible for that debt. Is there any way to get my name off the loan? Important Notice