[JeffTheRef]

Article 2 says in part, "A try for field goal is an attempt by a player to score two or three points by throwing the ball into a team's own basket." Part of Article 4 tells us that the try ends "when it is certain the throw is unsuccessful."

Nevadaref argues that the attempt to score must be due to a throw by the offensive player. If the player is prevented from throwing the ball in an attempt to score, it is logical to conclude that it is certain that his try will be unsuccessful.

Would you disagree that, if the flight of the ball is not due to the offensive player throwing it, it no longer qualifies as part of a try and that, since the flight of the ball on this play is the result of a bat by a defensive player and not a throw by an offensive player, we do not have the ball "in flight during a try," (4-12-3) and thus team control continues.

That is, the try ends when the blocking assures that it will not be released, THEN, with A1 still in player control of the ball, and thus with team control extant, the ball is dislodged.

Yes, it's a blocked shot. It's also backcourt, because something happens after the blocked shot that re-establishes team control. It's not a chicken and egg problem. the block comes first, just as possession (used to) come first in the adjucation of catching the tap.