The closest I have ever come to this situation was a couple of years ago, a guy from a neighboring club came to our deer camp, looking for a deer he had shot. As it turned out there were people cutting timber in the area, that picked up the deer! We never heard anything more about it.
As to the post of the guy losing a deer to another hunter 30 yards away, that is hunting awfully close to someone else! That is why I have not hunted public land in many years!
On our property, there is a 300 yard minimum, between stands rule! In the thickets of East Texas this is plenty of distance between hunters. If any deer that I shot ran 300+ yards to another hunter, I don't deserve the deer!