I still think Andy is talking nonesense ( not about a contador win, very possible, just the sewn up bit), not sure about all his aliens crap but
Contador could miss a break ( Oh hang on he's already done that on Monday)
He could bonk ( Oh hang on he did that in Paris Nicethis year and lost shed loads of time)
This is on top of the having a mechanical, fall, illness, team implosion etc etc
Its like going and watching a football match seeing a team score in the first few minutes and then saying they have won the game.