Doubt he intended to do anything more than knock the guy over,
If you intend to do nothing more than knock someone over by kicking them like that with an ice skating blade at speed, and you are a professional ice hockey player that should reasonably understand the nature of your equipment, I question your cognitive capabilities. Which is not to say that I think he was necessarily out to kill, just that I think his actions suggest him to be too dumb and violent to be part of society regardless of exactly how much damage he intended.
If you intend to do nothing more than knock someone over by kicking them like that with an ice skating blade at speed, and you are a professional ice hockey player that should reasonably understand the nature of your equipment, I question your cognitive capabilities. Which is not to say that I think he was necessarily out to kill, just that I think his actions suggest him to be too dumb and violent to be part of society regardless of exactly how much damage he intended.