I've got some ideas. I've also got some concerns about what this means in the race. The fact that Rosberg is still butt hurt about Hungary might even exceed Hamilton levels of childishness. To intentionally allow contact between team cars is much worse than any of Hamilton's prima donnaneess. Lewis would ruin his own race when he's butt hurt. Nico chose to ruin his and his teammate's race.
So Nico put Lewis out of a race. That puts him at a significant advantage in the championship. With only 18 races to score points for Lewis Nico has 19. An act of deliberate sabotage should be met with some severe consequences from Mercedes. I don't think they have the balls to park him for Monza, but they should. I think if they don't this will only escalate. Why would Lewis have any reason to listen to team orders (assuming they are going to impose them) when there are no consequences for intentionally making contact with your teammate (I realize he chose not to avoid it rather than intentionally hitting Lewis, but in the end the result is the same).
So what will Mercedes do? I'd park him for the race, but as I said they won't. Best case scenario Nico sits out FP1 and FP2 in Monza, but don't count on it. Worst case scenario the two drivers are no longer allowed to race period.