I am not a huge Lambiel fan but I do consider him a contender for gold. I don't think he would have decided to participate at the Worlds if he hadn't been in good shape. It's true that he skated at Art on Ice but all of the shows were in Switzerland and he did not have to waste energy with travelling.
The fight for gold will be between Lambiel, Joubert and Takahashi. A month ago I would have said that Joubert has the best chances (he really has improved a lot this year and I am not referring to the 3 quads) but now due to his inquiry he might have lost precious training time. As for Takahashi, I love him, I hope he wins but I still am not convinced that he has become consistant.