I honestly don't know what the deal is. I do know it's not illness and don't believe it's concussion. He's listed as undisclosed injury. Concussion is usually listed as upper body.
https://letsgodu.com/2019/01/28/fighting-hawks-fans-begin-annual-trek-to-denver/#more-671
Seems like ever since they legalized the weed, the effort has been a little weak. Coincidence?
How long have you lived in ND? This is not record level cold. 10 minutes? This windchill hysteria has gotten ridiculous. They don't even give the actual temperature anymore.