Because you trailed the buck at least 250 yards, I think you did the right thing waiting before taking it up, tracking too soon on this one might have cost you the deer in another way.
I can't imagine what someone would want with someone else's deer? I doubt he checked it in, but you have telecheck in Indiana. The local warden could check those records to see if any bucks were checked in that county. It is amazing the number of cases conservation officers make with the help of telecheck or online checking systems.
Being bow season, and so near the beginning, the number is probably few. Generally such people are really poor liars and officers are pretty good at catching them in one lie, leading to more.
I do agree with the poster, if the fellow is slick, he can justify why he took the deer. Most aren't that slick though.