Contador very, very clearly attacks as he comes round Andy.
Very, very clearly.
We've not been watching the same race then! Contador was committed before he came past.
Contador was at the back off the peleton when AS passed him but is well ahead of the peleton when he passes AS. This means he had upped his pace considerably in pursuit of AS, no? He was responding to the attack some time before AS's chain comes off. And he'd have been at full pelt. I seriously doubt, and give Contador the benefit of that doubt, he knew that the reason for AS's slowing was a mechanical. I doubt any of the race directors knew what had happened for some time either. He was by no means the only rider to go for it either. I didn't notice Menchov or Sanchez hanging about.
I was dubious when I first saw it but after I had listened to Laurent Jalabert offer his opinion, I agreed that it was just an unfortunate racing incident. It's a real shame for AS because I reckon he could have had Contador there. He definitely had got the jump on him.