Mike "The Situation" Sorrentino and his rock-hard abs might have hit rock bottom, with TMZ reporting that the Jersey Shore star has entered treatment for substance abuse. Sorrentino has been seen boozing heavily alongside his six cast mates since the televised bender debuted two years ago; he also makes up to 50K per night to appear at nightclubs all over the world, and was reportedly paid half-a-million bucks to be the face of Devotion vodka. The 29-year-old Situation's rep denies that he's in rehab, saying he "has spent the past several weeks at an undisclosed location for much needed rest and recuperation after his extensive production and appearance schedule." MTV recently announced that Jersey Shore—the network's most watched series ever—will film its sixth season this summer.