you have a dead deer man. I encourage you to go out and do your best to find him. I'm assuming the meat will be bad- unless it's below freezing there and there are no bears or coyotes around (even still I wouldn't eat it).
The best advice I can give you is DO NOT ASSUME where YOU think the deer went. Just because you saw him go up that hill doesn't mean he didn't go back down that hill after you left the area. I've heard of guys before that search and search and search only to end up finding the deer BEHIND the stand where they shot it. Do the circle thing- be patient and just keep looking. I seriously doubt he's going to be laying out in the open. Good luck to you- if I were closer I'd come help- I love the search!
...and on that day when my strength is failing, the end draws near and my times has come, still my soul will sing Your praise unending, ten thousand years and then forevermore!