It's been a rough year for Xhekaj and the Canadiens. The rugged defenseman has been the subject of trade speculation, and his future with the team is in question. He's playing very minimal minutes and these types of incidents don't lead to getting more ice time.
In closing, Arber Xhekaj may not have meant to hit the referee during a scrum but he unfortuantely did and needs to pay the price for it, even if it's a game. Xhekaj has to be careful where his fists fly if he's going to want to use them so often, or he'll find himself playing even less than he already is.