Borrowers in Georgia have accused NovaStar Financial and its operating unit of using phony settlement forms to hide an illegal kickback scheme with its branch network. The claim is at the center of Pitts v. NovaStar, a case filed last month in the U.S. District Court for the Southern District of Georgia. Attorneys in the case have asked the court to certify a class that could potentially include thousands of borrowers nation-wide and to…