What's Up With Shawn Thornton Getting Beaten Up Last Night?

So Shawn Thornton didn’t return after this fight. As Jack Edwards said he was out for the rest of the game with being “Beaten Up” Umm what the fuck? I thought Shawn Thornton was the toughest dude in the NHL? I thought he won 100% of his fights. What happened here? Who was this other guy? Is he King Kong or something. I mean he just caved in Thornton’s face likle he was fighting me or something. I’m so confused right now.