Watch the counter-attack and you will see two players getting into some physical contact. From the referee's view at deck level I am sure he had a hard time determining who the instigator was, therefore using a double exclusion to resolve the situation. Watching the clip in review it is clear that the white cap defensive player was unnecessarily swimming into the offensive player trying to counter. It was had enough to cause the dark cap player to respond in kind and some more. If this type of situation is not penalized the level of physicality in a game can escalate quickly. Don't rule out a MAM or Misconduct when dealing with physical acts that are not within the spirit of the game.