That energy stems from the Bruins head coach. He was clearly irritated after his team lost game five, a low-scoring contest that was decided in overtime. The Bruins had plenty of chances to end the series then and there, but they just couldn't secure the killing blow.
It feels like Montgomery is trying to rally his troops by expressing his emotions so clearly. He says he will continue to be 'pissed off' until the puck drops for game six, giving us an idea of what the mood around the team will be like leading up to the contest. Perhaps the players will respond by giving their best efforts in game six, hopefully closing out the series.
Reportedly, Bruins fans and writers alike are starting to get nervous after the loss. That being said, the team still has the 3-2 series lead with home ice advantage. Game six will be in Toronto, but should the Leafs pull off another upset, the Bruins will have the luxury of playing the deciding game seven at home.
Hopefully for the Bruins though, it won't come to that. After all, it seems like Jim Montgomery might blow a head gasket if the team does end up dropping another game in the series.