The angry, feisty "umph" seems to have fizzled from Charlie Sheen. He says he's no longer furious at CBS producers for axing him from Two and a Half Men. Asked yesterday on the Tonight Show how he felt about being bounced over his substance-fueled erratic behavior, Sheen said he probably would have fired himself, reports AP. But then he added: "Well, maybe not like they did." Ashton Kutcher debuts as Sheen's replacement Monday. (More Charlie Sheen stories.)