There are more details in this story.
https://calgary.ctvnews.ca/assault-c...ment-1.4584117
The above states the kid slashed the ref a couple of times before the ref shoved the kid away. At that point, the coaches and relatives started going after the ref. I'm not sure who the 36-year-old who also got charged was. Maybe he was one of the other guys who went after the ref. Either way, the grampa there is the real villain. He ran up and shoved the other coach hard on the ice which could easily have caused a head injury before going after the ref. Gramps should never set foot in an arena ever again.