Rules Analysis
Picks:
A pick occurs whenever an offensive player moves in a manner that causes a defensive player guarding (II.G) an offensive player to be obstructed by another player. Obstruction may result from contact with, or the need to avoid, the obstructing player.
A pick can be called only by the obstructed player and must be announced by loudly calling pick immediately after it occurs.
Call the pick immediately. If you wait too long, you lose your window of opportunity to make the call.
If play stops according to XVI.C, players reposition according to XVI.C.4 . In addition, the obstructed player is then allowed to move to recover the relative position lost because of the pick .
So if the disc is returned to the thrower, everyone resumes the locations they occupied at the earlier of the time of the throw or the time of the call.Then the picked defender catches up the relative position lost because of the pick. If he was trailing by 9 feet, then he gets to catch back up to 9 feet away, but does not get to set up right next to the offensive player.