Guns N' Roses's new single surfaced online last week and was quickly scrubbed from YouTube. But now it's back! For now. As we learned earlier this summer, "Shackler's Revenge" (GN'R's first official release since "Oh My God" in '99) will be included on Rock Band 2, out next month. Message board chatter suggests it was penned by Buckethead (Axl's former ...