NHL officials don't always strictly or consistently enforce the rules, especially in the playoffs (and especially in Game 7). One play that has been strictly enforced this postseason is unsportsmanlike conducts for players that stop directly in front of goaltenders who have covered the puck and spraying them with ice.
It's been called all postseason, and they've shown nothing to indicate that they're going to stop calling it. So you better stop doing it.
Boston's Brad Marchand apparently did not get the message. He received a two-minute minor for spraying Price in the second period on Wednesday night, and Bruins coach Claude Julien just could not understand it.
Even Jeremy Roenick is impressed by that look.