Late in the third period, with the Stars' fate already decided, Ryan Jones collided with Stars netminder Kari Lehtonen. It looked pretty harmless and incidental at the time; Jones was trying to make a play and simply ran out of room. However, it left Lehtonen a bit shaken up.
So Jamie Benn decided to take matters into his own hands in defense of his goaltender. Benn skated behind Jones and violently cross-checked him in the back. Benn was rightly given a game misconduct for the act.
The Stars are struggling mightily right now, and they might have just lost their best player to a suspension. We'll see.