From what perspective? That was an abrupt move too but he left more than a car's width at the inside edge of the track.
I don't know if there's a rule regarding abruptness! Imagine a crossroad in which you have preference and the one who comes from the right has a stop signal. If he doesn't stop it's his fault, he should. But if he brakes in the very last moment and very abruptly, making you stop... then what? Maybe Rosberg was in front and not alongside, but the move was too abrupt, like Perez one in China.
After the Alonso incident, Rosberg radioed his team and said: "Oops, I did it again"
Edited by 4MEN, 22 April 2012 - 16:46.