Depends on how you see it, particularly the overhead camera.
Rossi ran him wide which I thought was within the rules as he was in front.
His line didn't change and Marquez turned into him.
If Marquez hadn't fallen off it was just what they were both doing to each other all the race.
It will be a hollow victory if Lorenzo wins the championship as it took two of them to beat Rossi !
On the other hand, if Rossi can still do it... :-)