Steven Bannon’s refusal to pay his lawyer close to $500K in legal fees may end up inadvertently exposing more evidence of financial fraud by the former Donal Trump adviser. According to a report from the Daily Beast’s Jose Pagliery, Bannon stiffed longtime attorney Robert Costello, a former federal prosecutor, and a judge has ordered him to pay the $480,487 that is way overdue. For his part, Bannon has asked a judge to keep Costello’s law firm from reviewing his bank statements, with Pagliery writing, “a request that has required Bannon to awkwardly concede that his personal finances likely ha…