lawyer forged a signature?

so my fiance has been trying to finish up a car accident suit for a while now. we decided we were being jerked around by the lawyer so she went and talked to another who was highly recommended. we discharged the other lawyer and today she gets a call from the new one asking if she ever authorized a settlement or signed paperwork.

it sounds like the original lawyer didn't like us firing him so he forged her signature on settlement paperwork. anyone have any ideas as to where to go from here if he did? can't he be dis-barred?