I must say that the knee stuff has been overhyped among the anglo media, in the spanish media I just saw he was worried about his knee and that he wanted to try in the Pyrenees, but they never talked about a posible withdraw.
Yesterday I heard Dani Navarro in the radio saying that Contador was a bit low of moral because of his crashes and injured knee but it seems that he had a little improvement by the end of the day.
By other hand I don't see Contador as a mind gamer, he is a transparent guy , he said that afer this Giro winning the Tour was going to be very difficult and that he is not in top form, he doesn't have nothing to show, has been a good year in results terms so if he loses that's not a big deal.