I'm in two minds about the penalty, ruins what was otherwise a great race. Hamilton clearly gains an advantage and was not forced off the track, he drove himself off the road. Did anything stop him backing out and sloting behind Kimi? Probably the knowledge he'd lose a lot of time in doing so, if that was gravel he'd never have even tried hanging on. Remember the difference guys, if you decide to do the walk of death around the outside you will always drive yourself off the track. Kimi's move into the first corner was hard but fair, he moved once to defend and then back to the racing line. Perfectly legit.
Hamilton on the other hand was weaving down the straight to stop the rocket slipstreaming him down the straight. Not the first time he has done that either...
Also whoever it was claiming Kimi overtook under yellows, get a grip. Hamilton was off the track, what was he supposed to do? The rule of overtaking under yellow is where a driver deliberately takes a place by fighting for it on track. I bet the yellows weren't even waving when the two of them entered that sector.
Gutted for Kimi, a class drive all out the window with 3 laps left. Was cheering for Alonso, was hoping he could get in there!