It was Montgomery telling everyone they need to start picking up the slack and it doesn't matter who you are or what you've done, if you don't pull weight you won't play. Just ask
Brad Marchand. Pastrnak's benching when Boston was leading is also a sign that you can't get complacent even with a lead. The Bruins gave Seattle ample opportunity to get back into the game, with Pastrnak being the reason why.