I dunno. I saw it. Could be he got his bell rung and his first instinct on coming to was to hit something. I admit that is being generous.
"THIS IS HOCKEY!"
But he cross checked the ref. Dumb move. Regardless of being hit. You cant hit the ref.
This picture seems to show him going to the Predators bench.
I understand the standard suspension is twenty games. If I were the NHL commissioner, I would ban him outright for the balance of this season and all of the next, forfeiting his salary. Send a message. I expect the referees will be demanding stern punishment.
Of course, the NHL does not have an actual commissioner.