My advise is to call in sick and go claim your buck. By the route you are describing it sounds like you were pushing the deer. It's no uncommon for a deer to try and "loop" on you if you are close behind.

Did he actually complete the "p"? If so the best be is to clearly mark the blood trail you followed him in on and then look for where he veered off again. By the description of the hit, the blood trail and the distance covered I believe you only got 1 lung. The deer can go quite aways but it's uncommon for it to survive that type of hit although it dose on occasion happen.

From where he meet back up with the original trail I'd keep a keen eye toward him breaking down hill or toward water. The more of these stories you read that have a conclusion as well as from personal experience leeds me to this conclusion. I'm quite confident if you get out there asap now that you'll locate him.

I know you don't want to hear it but Good Luck