By Joseph Currier, Wrestling Observer The backstage melee after ‘All Out’ may have spelled the end for the former world champion. CM Punk’s time with AEW could be nearing its end. Dave Meltzer of the Wrestling Observer reported on Friday that AEW and Punk are in talks regarding a buyout of Punk’s contract. Punk’s AEW future has been in doubt since his involvement in a backstage fight that took place after September’s All Out pay-per-view. “AEW is in talks with Punk about the future but right now it looks doubtful he will be back,” Meltzer wrote. “Those with close knowledge of the situation sai…