Stupidly consolidated my student loan with my now ex-husbands. We live in AR, can it ever be unconsolidated?

In my divorce decree it says that I am responsible for my original portion and he is responsible for his original loan amount. Sallie-Mae doesn't care. They say since I am the only one responding to thier calls and mail, I am responsible. I have spoken with my lawyer, he hasn't done anything. Any advice? Thanks!