Nothing to do with drugs, I'll let Marco and Dombo carry on about that somewhere else. Personally anything of that nature is incidental as I don't like him anyway. One of the reasons is his attitude, this has come to the fore in recent stages in the mountains.
For years Lance demanded undivided loyalty and for people, like Levi, to flog themselves to a standstill for him. Since Lance lost his time this year, when the mountains have loomed at the end of a stage he has sat up and spun in, he isn't at his limit he's just not bothering to push himself harder and sitting there smiling to the camera. I think it shows a complete lack of respect to the team and especially Levi who is the now assumed team leader and best chance of a decent position in GC in Paris. I don't think Levi would trouble the podium at all but he may do better and stand more of a chance of getting as high as possible if Lance did the decent thing and having slipped back on GC now worked for Levi as the new team leader. Such arrogance that it would be beneath him is pathetic and it would serve him a damn site better if he paid back a fraction of the work someone did for him for years, especially as he's supposed to be his friend.