Yes, but looking further back, was Sutils tyre going from when Kobi decided to rear-end him? If so, you could always blame Kobi.
I blame Petrov for trying to push Hamilton into the wall and then losing speed, therefore letting Alguesari (who knows if I got it right and who cares) make an opportunistic dive into the chicane at a much narrower angle than a driver would normally take. Perhaps Alguesari hadn't spotted Sutil at that point due to the chaos before that point..
I haven't watched a replay, this is what I remember of the incident and only saw it on the day, but please prove my memory wrong..