Look at the video that
@pacusmc posted on the first page of this thread.
While it is not from the "pylon cam" as we had with the F$U pictures, we can still figure out quite a bit.
First, it was the North Carolina game, with Drake Maye, not the Clemson game.
Second, Maye had the ball in both hands. He was rocking it back and forth as he ran. The ball clearly went across the line as he was tripped. But it doesn't matter where his FEET were, it only matters where the BALL was.
Most importantly...no matter how one tries to slice/dice it...the ball was NOT on the one yard line when the tackle began (and make no mistake, the ball was absolutely spotted at the one yard line, not the one foot line or the one inch line).