It was a blind side hit shoulder to shoulder and top of shoulder to chin/bottom of face mask after releasing the shot/pass.
The neck snapped wildly to the right which suppresses the 3 nerves at the base of the ear/jaw 1) vagal nerve 2) Hypoglossal nerve 3) glassopharangeal nerve - as would a neck snap from from a right hook in boxing.
A cross shot to the temple or back of the ear has the same affect on the brain telling the body to shut down- resets to protect the brain. His body spun in a full 360 and he was down.
The previous comments show no concern for the player safety. They all call it a dive and that he took the next face-off, after a long review.
I don't think anyone would know that except the player himself.
I agree, if the player is not hurt, he should go through concussion protocol anyway. To determine the exact nature of the injury.
If he fails the concussion protocol the player should not be allowed to continue to play for his own safety.
The offending player should also not be allowed to play as long as the receiving player takes to recover.
If he never got up and was carried off on a stretcher I think a lot of people would have a different view on this type of hit. Brain injury or spinal severed/broken.
Any head snapping from rear to front can also cause the brain stem to dislodge from the spine- rabbit punch.
Video of the head torque...
https://twitter.com/i/status/1231329781259677705