He lied to everybody in season 2 as well, told everybody he was doing it and still NOBODY ever believed him. Instead of that being his strategy this year, he's instead taking the "I don't care when I get voted off" route. That takes a huge bulls-eye off his back because they don't think he'll play to win.
In the meantime, Will and Boogie get out of being evicted week after week. I think they are playing the game so well, the S6'ers don't even realize they're playing it! Morty's has a link to the Dr. Will/Janelle conversation and it's pure genius the way he worked her. I really hope he wins it again and donates the money. He doesn't need it, that's for sure, but it'll prove that he really is the best BB player in the history of the game.