A.R. 15.95 Act common to game
Third-and-10 on A20. Pass over the middle is ruled incomplete at the A30. The receiver controlled the pass with one foot down and was then contacted by a defender. As he went to the ground, he got his second foot down and then still in control of the ball he lunged for the line to gain, losing the ball when he landed.
Ruling: Reviewable. Completed pass. A’s ball first-and-10 on A30.
In this situation, the act of lunging is not part of the process of the catch. He has completed the time element required for the pass to be complete and does not
have to hold onto the ball when he hits the ground. When he hit the ground, he was down by contact.
In the above example it happens to be a lunge, but all that was required was that he perform any act common to the game. In doing so, he completed the time element required for the pass to be complete and did not have to hold onto the ball when he hit the ground.
That's why Blandino had to say he looked for a football move.
Remember, when the football move was spelled out in 2016, the examples were "tucking the ball away, turning upfield, taking additional steps."
If you agree with the overturn, then either you're saying at least one of those things wasn't considered an act common to the game just two years earlier, or you're saying he didn't do even one of these things.