I have required to provide medical insurance for my wife in January 2013 but took her off my medical in November 2012 and cannot add her back on.

Generally, you cannot be ordered to do what is impossible.  But it depends when you were ordered to do it.  If you were ordered to obtain insurance before you dropped her, then you likely violated the order.  If you weren't actually ordered to do it until January, I assume you made this argument at that time and the argument was rejected.  If you still have time to appeal, you should.  If not, the court may begin contempt proceedings and you can argue that it is not possible.  The court could make you responsible for all out of pocket expenses due to your failure to obtain insurance.