Poor man. So far it doesn't appear that he was doing anything stupid, like riding without a helmet or under the influence. Not much you can do when a dear jumps out in front of you.
Deer! Deer! Not dear.
"Not much you can do when a dear jumps out in front of you."
The only way to avoid deer is not to ride at dawn or dusk. Also, it helps to never ride in upstate NY, northern PA or west Illinois.
Here in the Northeast (NH, VT and ME) we have to duck the moose all night. Their eyes do NOT glow when illuminated by headlights.