Sports Illustrated Kids situation - what's the call?

[Mark Padgett]

From NBA rule 10:

Section IV-Thrower-in
a. A thrower-in shall not (1) carry the ball onto the court; (2) fail to release the ball within 5 seconds; (3) touch it on the court before it has touched another player; (4) leave the designated throw-in spot; (5) throw the ball so that it enters the basket before touching anyone on the court; (6) step over the boundary line while inbounding the ball; (7) cause the ball to go out-of-bounds without being touched inbounds; (8) leave the playing surface to gain an advantage on a throw-in; (9) hand the ball to a player on the court.

If SI for Kids said it was a violation, they need to go stand in a corner with a dunce cap on.

BTW - does (8) mean a player can't jump when inbounding if it gives him an advantage? Jumping is leaving the playing surface, isn't it?