Mortgage-Divorce-Assumption

my divorce was final last summer. in the agreement, after failing to sell our home, i let him have our mortgaged home, per agreement in the divorce decree. my lawyer had me sign the final decree, promising to hold such signed agreement until after he had either sold or refinanced the house to remove my name as co-borrower. my lawyer did not keep her promise and provided his lawyer with my signed decree. he remarried immediately and has a new baby. he & his new bride are living in the house with the $600,000.00 +++ mortgage still in his and my names. originally he represented he was going to sell the house or refinance. he has done neither!! i am still liable. now my lawyer says i have to pay some huge attorney fees and court costs to force him to comply. i gave him everything because i was afraid for my life. i have no money for attorneys and court costs. i sent him an assumption package for him to submit - still nothing! is there anything else i can do to force him to get my name off of the mortgage?? can i rent out space in the house since it still is in my name?? drastic and outrageous idea but i am desperate!!! please help!!!