OK, keep hunting there. If you lose another deer to this guy, that one is on you. You know you don't have permission to recover a deer on his land why continue to hunt there and take the risk? Move away from the property line so if you get a shot you have a better chance of the deer falling on your side of the line. If you hunt out of the same stand and lose another deer that crosses the line, well, YOU WASTED THAT ONE!