Given the way Boston's last two games transpired - blowing a three-goal, second-period lead in Philadelphia on Monday and seeing Tuukka Rask go down with a concussion after a questionable blow to the head in a 3-0 loss in Columbus on Tuesday - the Bruins easily could have continued their spiral after a rough start against the Pens.
Just 24 seconds into the contest, Penguins captain Sidney Crosby launched a slapper from the left circle that sailed by Halak's glove and inside the post to put Pittsburgh up, 1-0. Boston, however, showed some of the fortitude and resilience that defined them during last season's run to the Stanley Cup Final, as they pushed back for four unanswered goals.
"We have to remind ourselves that we are grateful to be around this group, privileged to wear the sweater - some of these things that you get away from a little bit - and all of sudden realize, 'Hey, let's get back to it,'" said Cassidy. "We've got a good group in here; we've got a chance again. We're a good team. Let's play like it. Let's get back at it…when we play together and we're on the same page, we've got a good chance to win.
"We're not going to win every one, but we have a good chance, and do it for 60 minutes. Play through the bumps. And that's on us to reinforce a lot of that message, so we did more of that today, and we'll see where it leads us."
After outside questions arose regarding their response - or lack thereof - to Rask's injury during Tuesday's loss in Columbus, the Bruins clearly wanted to send a physical message. Boston's fourth line of Sean Kuraly, Chris Wagner, and Joakim Nordstrom - who stepped in front of Jusso Riikola slapper during a second period PK and briefly left the game - set the tone in that department.
But it was Torey Krug who had the Garden crowd buzzing late in the second period. After a scrum developed in front of the Bruins bench following a questionable hit on Matt Grzelcyk, Krug tangled with Penguins forward Patric Hornqvist.
The officials stepped in before the two could drop the gloves, sending them off with matching roughing penalties. But as soon as the two exited the box, they reengaged and Krug delivered a hefty right to Hornqvist's nose, before taking him down to the ice.
"It wasn't about going out there and trying to run them out of the rink, by any means," said Krug. "Look at the roster, we don't have that group anymore, but we talked about sticking together and competing harder and just sacrificing a little more.
"That doesn't mean putting a guy through the glass, but it means going to the corner and having the willingness to get hit or to hit someone else and come out with the puck. I think that desperation was lost there for a few games.
"Hopefully this was a step in the right direction and we can grasp that concept again, and that's been part of our DNA for years."