When a player dives back to first in response to a lightning-quick pick-off move, he by definition hurls his body through air, and occasionally his foot or leg will come up off the bag even after he's arrived safely. That's physics. That's poetry. It's not a mistake. It's a body moving through space. Instant Replay should be used to reverse bad calls and obvious mistakes made by the umpires and players—it should not be used to penalize a player for being six feet and an inch and weighing 205 pounds and, against gravity and with brutally-honed instincts, lurching to his left to touch a bag and—for an instant—lift off.
I was texting with my brother, who was at the game and didn't have access to the replays I was watching. I thought I'd cool off about this overnight, but nope.