He undoubtedly has a concussion.
This choke hold, pinched nerve only is nonsense. He possibly could have a spinal cord injury.
He also might have whiplash along with a concussion.
Note, when I watched the replay a few times, after he stands up he grabs the upper right pectoral muscle, then taps it. As though it burned or in pain.
Watching him jogging in practice you can also see him twisting, stretching his neck muscles as though attempting to alleviate tension or pain.
I believe he’s going to have issues this Sunday.