re: Pic of les & the "clock it" call?

Here's the issue with JP's claim -


JP states that there is 100% video evidence that Miles was not signaling for a spike.

To make such a claim, one would know what the signal to spike the ball would look like.

If JP doesn't know what the hand signal looks like to spike the ball, then how does he know, with 100% certainty, that Miles was not making that call?