Wait till dawn in a similar situation you may take part in next time, deer hit like that are relatively easy to recover...but they have to be left ALONE for quite some time.....when they are not disturbed, they bed down and die. they do not travel unless forced...but with adrenaline from being jumped, they can run a long way.

I used to say wait a minimum of 6 hrs....but a few such experiances have told me 9-12 hrs. Most but not all would only take 6...the only reason i think you can justify going back sooner is if heat might spoil the meat.