Ok,iv looked at both of them in detail. Yes Grojean's move was aggressive, he saw that Lewis was gaining on him and he moved over to defend the line,as he is entitled to do. He left Lewis a car width of space on the track (just) and they just touched,but that was enough. Grojean was being very aggressive yes and the accident that resulted was very serious,and luckily no one was hurt. I think if it had just been Hamilton and Grojean,then it would have been a racing incident, at worst a drive through for Romain, but it was the catalyst for a huge pie up. If you compare that with what Michael did to Rubens last year I think,when he closed him against the wall,that move was alot more serious, coupled with the speed they were going. I still think that Hamilton could have done a little bit more to prevent the crash,but as a racing driver,he didnt want to change line and relinquish the position.
It dont matter what I think though does it, the stewards have made their decision and imposed what they feel is the appropriate penalty. So ultimately that tells you everything you need to know. I just think that if lewis had moved across to the right and used all of the track,then the accident wouldnt have happened.