Update :
I was able to talk with my neighbor and he finally agreed to let my brother retreive the deer. We found him approx. 50 yards inside my neighbors property line. I'm really happy it all worked out for the best. My brother is like a kid at Christmas now.
Awesome! I'm really glad you could work it out. Although I still the the guy is a dick at least least he won't go down in history of the biggest of all.
Give your bro a big high 5 for me!