EXCLUSIVE: Just hours after the international media feasted on Charlie Sheen’s juicy lawsuit against Warner Bros. and Chuck Lorre comes news that it may not go any further. We’ve learned that Warner Bros. has succeeded in officially putting the contract dispute into arbitration. “It’s been commenced and approved by JAMS,” an insider tells us, referring to Judicial Arbitration and Mediation Services. “It’s a definite go.” The Warner Bros./Charlie Sheen contract, like most in Hollywood, calls for private arbitration to settle all disputes. But with its lawsuit filed today, Team Charlie is trying to draw the studio and its executive producer Chuck Lorre into a messy public court battle. Both Warner Bros.’ legal eagles and Lorre’s attorney Howard Weitzman now will try to include Lorre in the arbitration, too. (Aw, but where’s the fun in that?) As for Sheen’s $100 million lawsuit filed by litigator Marty Singer today, a studio insider derided it as “rambling, as if Charlie was helping dictate it.”