Another thing nobody mentioned is that Brooks was on a full run. When his feet left the floor, Manu was between 9 and 10 feet away from him. Manu is coming over to get in his way, and Brooks leaped from well short of the mid-court line. Look at how far he went in the air, while shooting that shot.
Manu is supposed to know that they guy's foot is going to come down nearly 10 feet away from where it left the court? That's not exactly a normal shooting motion, is it? You think he calculated how far the guy was going to fly, and knew exactly where to put his foot? Gimme a break.