Spot throw-in

[truerookie]

Originally Posted by Ch1town

Following a TO the ball is bounced to A1 for a spot throw-in on the backcourt (endline). Before the ball is caught by A1 he runs inbounds & A2 simultaneously replaces him & catches the bounced ball. What do we have?

I know the thrower (A1) cannot be replaced on a spot throw-in once the ball is at his dispossal. But isn't dispossal defined as the ball being caught by the thrower when bounced to him?

Help me out, thanks!

Yes, this is why you blow the whistle and readminister the throw-in.