The Flyers and Caps have a line fight because Ray Emery is a crazy person
One thing I thought was part of "the code" of NHL fighting is that both combatants have to want to engage. Holtby clearly didn't, so Emery was really out of line here, and could face suspension. The funny thing is that it's the Flyers who came out this tussle worse for wear. Steve Downie suffered a concussion and Vincent Lecavalier suffered injuries to his face and is expected to be out a few games.
By the way, hockey fans, except the debate of fighting to be raised a few octaves for a while after this.