Really? So because Semin hadn't done anything all game, that means he's not allowed to play the last 4 minutes hard? And that was a textbook check, a dangerous check, would have been what Boyle did to Semin. And because Boyle got wrecked along the boards that gives him the right to throw a slew foot? Evgeny Artykhin got a 3 game suspension for the exact same thing earlier this year. Boyle is the lucky one, because if this was the NHL he would at least be fined if not suspended.
How was that far from a cheap slew foot? He puts his leg behind Semin, and checks him into his leg so he falls over it. Actually if there was a tutorial on how to execute a perfect slew foot, I think that would be the hit shown.
And again, how does Boyle getting wrecked give him the right to throw a cheap check at Semin while he's not looking? And again, if that were an NHL game he would have got a fine, or maybe even suspended.