For Matt Grzelcyk, it would have been uncomfortable enough to sit in front of a laptop, with Bruce Cassidy at his side, to review the sluggish feet, passive play and hiccuping breakouts that had burrowed into his game.



What made it worse was when these shortcomings were broadcast for all of Grzelcyk’s teammates to watch.



“When you get called out like that in video in front of the team,” Grzelcyk said, “you want to respond.”



The session occurred when Grzelcyk’s performance mimicked that of the team. When they gathered at Warrior Ice Arena on Jan. 16 prior to a home game against Pittsburgh, the Bruins were stuck in a 7-6-7 stumble.



Grzelcyk was coming off a healthy scratch in a 3-0 loss to the Blue Jackets. Tuukka Rask was suffering from headaches and severe motion sickness, the consequences of an Emil Bemstrom sideswipe in Columbus. The Bruins could not answer Bemstrom’s blow or make life otherwise difficult...