I'm humble about most things in life, but I am sure it was the same buck.
I've seen him on the stand three times so far during the season. Twice in the afternoon, once up closer than I care to admit since I didn't connect cleanly, and in the morning, with a clear view for 3-4 minutes.
He's also got almost a 5 inch track, easily identifiable. I hunt in broken farmland, with woodlots. Tracks are everywhere, and you learn to associate the tracks with certain bucks as the season moves along. I'd venture to say a very low single-digit % of bucks grow to the age/body size that allows a 5 inch track. I'd love to be wrong, cause that'd mean I've got more than one monster on my hunting grounds

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Seriously though, it's the same buck. I'm not hellen keller in the stand.