EXCLUSIVE: Barry Levinson, a card-carrying member of the WGA for 40 years, has resigned over what he termed “reprehensible” treatment he was given in an arbitration of screen credit for the adaptation of the Philip Roth novel The Humbling. Levinson, who hoped to share credit with Buck Henry and Michal Zebede, said he didn’t quit because things didn’t go his way. He did it to protest the dismissive treatment he received after he read three opinions by the anonymous writers who acted as arbitrators. One that denied him credit had completely mixed up facts in the written decision, citing passages that didn’t make the shooting script, and even some that only appeared in Roth’s novel. When Levinson asked the WGA to request that the arbitrator be asked to reconsider the decision and get it right, or else be replaced, the WGA dismissed Levinson’s request. That is why he quit.