In hockey, there's an unspoken Code that all players know they should follow. You don't mess with the goalie after the whistle, you answer the bell after a bad hit, and when a play is offside, you stop playing. It's common sense, and every hockey player gets it. Mess with the Code, and the other team won't be pleased.
Predictably, this sparks a commotion as Stars players express their displeasure with the untimely hit. Tkachuk's game plan involves getting under the skin of the opposition, but there are limits, and this is a play that shouldn't have happened.