Umpire Call Changed

[Little Papas]

Thanks,
The BU did not ask for help the HU was approached by the team's coach to appeal the call a conference of umpires was called and the call was changed.

This is what happened: A ball was hit to 3rd base, the 3rd baseman threw the ball and took the 1st baseman off the bag, and he then turned and tagged the runner as he passed him by the BU called him out on the tag.

If the call was changed because of lack of vision, I could understand the HU asking if he saw the play, but the BU said he saw the play clearly and the runner was out. What do you think? Should the call stand?