I'd guess that he's wanting to show a different side of himself as well. His sensual side is well established and he needs to demonstrate an ability to play different roles to move his acting career forward.
I expect Melissa to win as she's best suited (available) to heading up a DWTS tour. Lil Kim is having scheduling conflicts trying to rehearse and Shawn just needs to get on with her life. Gilles probably already has something else lined up which we'll hear about during the post DWTS media blitz.