He had had a rear wheel change at 60K to go but assuming the mechanic had done something odd one would have thought in the next 59K the rider would have noticed something was wrong.
CPs words were good. Although cynic that I am I don't believe much that is said to a camera.
Incidentally I have just re-watched the interview Mr Cavendish gave after he outrageously got Sagan chucked off the Tour following his idiotic attempted passing manoeuvre when there clearly wasn't room for him to get through to pass Sagan. At least over his fumbling mumbling "nothing to do with me" words his face displays his shame.