Despite Boston's vaunted bigness and badness, the Canadiens have set the physical tone for most of the series. If that's not poking the bear, I don't know what is, and it's an approach that's served Montreal well - if forcing a seventh and deciding game against a strongly favoured opponent is any measure of success.
The bear doesn't require poking to understand the stakes and circumstances. He's now the prey rather than the predator. Being cornered doesn't make them any less dangerous, but in this series, the time has long since passed for the Bruins to play the intimidation card to any effect.