"Step, right now at this time is probably getting operated on. He broke his jaw yesterday," Vigneault said on Friday afternoon. "We'll have an idea of the time frame tomorrow. That's stuff that happens in a game that you have to deal with and that's what we're trying to do."
Prust was not penalized on the play, but he wound up with a two-game suspension for interference.
Stepan returned to action minutes after leaving the ice to receive treatment and clocked in with a couple of feisty shifts, but he now looks questionable at best for Game 4 on Sunday night at Madison Square Garden.