Yep, I replayed it & Borowiecki yelled "F**k" as he shook his glove in pain, then Larkin cross-checked him in the back right before Mantha scored.
In a blowout game, losing by say 3G or more, with <3min left, I'd greenlight McIlrath to start wrecking players like Borowiecki, Tkachuk, Marchand & known cheapshot artists. It'd keep 'em a bit more honest the next game. A few punches to the face/KO's ought to get 'er done. And if they pull the same crap (inevitably) in the next game(s), they get a bigger beatdown by the Wrath! Bring on the Wrath!