Dash -
Yes, the PU sold it well, at least after he called it, which was a bit late. The catcher (my son) told me later that he saw that his direct path to the ball would involve running through the runner, so he did it expecting to get the call. After he threw the ball, he turned around looking for the call, and it was then that the ump called it.
It was actually a critical play. In a one run game, the difference between one out and a guy on second, and one out guy on first is a big difference.
When I saw it I thought it was just a no call. But kinda gotta give my son props for seeing an opportunity and being the salesman a bit himself.