It is all what ifs. What if AC didn't attack when Andy popped his chain? What if Fabian didn't slow down the peleton for Andy when he fell? What if Andy would have slowed down Fabian when Frank fell and broke his collarbone and brought AC to a stop? What if Frank was there to domestique Andy up the mountains?
I think AC apoligized for 2 reasons. 1) The fans were not happy with the attack and booed him and 2) It was a more personal attack on Andy as they were riding together in the mountains and AC actually seen Andy have the mechanical then rode beside him and attacked.
The cobbles wasn't really personal. Fabian didn't accelerate and stomp out a monsterous pace when the peleton split due to the crash he just never slowed.
I wonder even how long it was before Saxo really knew that Contador had got caught in the crash.
AC won and Andy finished 39 seconds behind. That is history. The rest are what ifs?