Sean Couturier exited the Flyers’ home game Monday night against the Islanders after taking a hard hit from Ryan Pulock in the first period. The 31-year-old center left with 7:39 minutes remaining in the opening frame. Couturier slammed awkwardly into the boards while playing the puck. He did not return to the game. There was no word on his status after the Flyers’ 4-3 overtime loss. Couturier was just promoted to the Flyers’ first line heading into the matchup with New York. After Monday night,