Mortgage without (ex) husbands signature?

can a bank in florida legally issue a mortgage, deed and title execute a mortgage without the signature of the soon to be ex husband for a house the soon to be ex- wife wants to buy before the divorce is final? Plus, the house to be bought is considered a "secondary" home evenso the jointly owned house of the divorcing parties has sold a months prior to closing of the :secondary" home. Can this be done or did the issuing mortgage bank make a "OPSH" here? now I can sell the house because I can clear the title, evenso the ex has NEVER been on any of the papers.