Early in the first period, with the Hurricanes leading 1-0, Wallace caught McGinn with a big hit as he was moving the puck up the boards and out of the zone. McGinn took the brunt of the hit on the back of his neck and head and was forced to leave the game for nearly ten minutes.
Wallace was hit with a five minute major for boarding as well as a game misconduct for the hit, which caught McGinn in a vulnerable position as he slipped along the boards while moving the puck. Whether this is a hit that is likely to lead to a suspension is debatable, especially since Shanahan has shown in the past to defer to the one-ice punishments if the penalties fit the crime.
McGinn returned to the game and Wallace was kicked out, with the Flyers being handed a five-minute power play for the hit, so it could be seen that the penalties could be sufficient in the eyes of the league. Wallace clearly left his feet to make the hit and primary contact appeared to be the head, so there's a good chance that Shanahan take a closer look at this one.
The Flyers are currently leading the Hurricanes 3-2 through two periods.