In this case it’s a no brainer. Anyone who has officiated that would be reading this has called dpi. How many people have called the defense for blocking a wr who is no longer a potential blocker? I bet almost 0. He asked a specific question about a specific route but wouldn’t say if the ball was in the air or not. I know it’s easier to call dpi on this play when the ball is coming then to call the defense for a foul while the qb still has the ball and is the question that I find interesting as to who would see it but it wouldn’t be dpi