ok, so he got close to the safety car so then backed off a bit. the easiest way to back off without slowing down too much is to take a wider and longer racing line. its a tricky situation, but what i see is vettel driving into the back of webber. hamilton is on the other side of the track. he didnt force webber into breaking too hard. it was just vettel not looking at where webber was. you can see in the video it looks like vettel never even started to break. its unfortunate for webber but not really hamiltons fault.