When you watch the onboard shots from Hamilton it is a pretty clear case of Vettel doing a double movement to block him, when you see the onboard from Vettel you can see it was only a double movement because he wasn't in control and was still fighting to get it back. It's a very difficult thing that I think could have gone either way and the opposite party be very aggrieved. I do wonder though, if Ferrari should have told Vettel to let Hamilton through straight after the incident. I appreciate that bouncing your car across the grass is the exact opposite of gaining an advantage by leaving the track but the principal is kind of the same, had there been a wall there rather than the patch of grass then it would have been race over for Seb, the fact there wasnt and he was able to go over the grass meant he was able to leave the track and maintain his position.