Every angle I saw showed that Webber's left side tires were over the curb and that the angle he took into the corner wasn't possible with another car outside. Hamilton was in front of Webber, and while he could have given Webber more room, why does he have to? Hamilton took an angle that left Webber room when he should have slammed the door shut.
Again, just what I saw, would have helped to have a non-shit onboard from Webbers point of view, but like I said, every angle I saw just showed me Webber trying to fit in a hole that wasn't big enough.
edit: So I take back about it being a penalty for Webber, this is what I'd consider a racing incident, but that doesn't make it any less his fault (probably 60% Webber, 40% Hammy, 100% FIA/Bernie/Ect for not letting lapped cars get a lap back during the SC period and fucking up the restarts for those people actually racing).