I watched it about 30 times and it seemed like his arrow was really high to start with. If you notice when he drops and guestimate where the tip of the arrow is, it appears that the deer only drops a few " at the MOST before it hits.
Im not trying to take anything away from that freaking amazing reaction time either. I know i did make that thread a few weeks ago and this vid DEFINATELY shows the RT of a CALM, FEEDING deer adn its amazing w/out a doubt. I just dont think that his shot would have been that much lower than it was.
Its cool seeing what the arrow does when it hits the deer as well!
Nice find