I am firmly on the dick move side of this one.
Yeah, Contador won another TDF but the dude's an unlikeable douche. The questionable acceleration last year, fine, he was really the only one on that team working for him and was clearly the strongest man in the race. He had to do it.
But to attack the yellow jersey after a mechanical is questionable at best, and an extremely piece of shit thing to do at worst.
Guy's got no style, no heart. He may be the best stage racer of the last three years but he's no great "Champion," just a cheap opportunist.