I happen to believe that this play
IS covered by the current NFHS rules, unfortunately quite poorly.
The pertinent rules are:
DEAD BALL
6-7-5 The ball becomes dead, or remains dead, when:
. . . An official's whistle is blown
ALTERNATING POSSESSION
6-4-3 . . . Alternating-possession throw-ins shall be from the out-of-bounds spot nearest to where the ball was located. An alternating-possession throw-in shall result when:
e. The ball becomes dead when neither team is in control and no goal, infraction nor end of a quarter/extra period is involved.
CONTROL, PLAYER AND TEAM
4-12-6 . . . Neither team control nor player control exists during a dead ball,
throw-in, a jump ball or when the ball is in flight during a try or tap for goal.
BALL LOCATION,
4-3-3 . . . A ball which is in flight retains the same location as when it was last in contact with a player or the court.
Therefore, by the current wording of the NFHS rules, this play results in an AP throw-in from the nearest OOB spot to where the ball last contacted the floor. I'll state now that I believe that this is an absolutely horrible outcome, but it is the current application of the rules. In my opinion, any official who did it that way would need a police escort out of the gym, if the arrow happened to favor the defense. So what else can we do?
What should have been done two years ago when the definition of POI was added is that the sentence from 6-4-3e should have been moved into 4-36-1. It is very similar to an interrupted game, but not exactly the same. The two should be treated in the same manner though. (Note: Until the rules are changed, I'm ruling that the situation in the OP IS an "interrupted game" and applying the POI rule.)
What this would do is allow the POI sequence to properly be applied to this situation. 4-36-2a would be bypassed as there is no team control, but 4-36-2b would take precedence over 4-36-2c, since the stoppage occurred DURING the throw-in, thus the AP arrow would not need to be used. (However, if the ball had been tapped or deflected on the court, but the whistle sounded prior to control being established, then 4-36-2c would take effect.)
RULE 4, SECTION 36 POINT OF INTERRUPTION
ART. 1 . . . Method of resuming play due to an official's accidental whistle, an interrupted game, as in 5-4-3, a correctable error, as in 2-10-6, a double personal, double technical or simultaneous foul, as in 4-19-8 and 4-19-10.
[The ball becomes dead when neither team is in control and no goal, infraction, (time-out,) nor end of a quarter/extra period is involved.]
ART. 2 …Play shall be resumed by one of the following:
a. A throw-in to the team that was in control at a spot nearest to where the ball was located when the stoppage occurred.
b. A free throw or a throw-in when the stoppage occurred during this activity or if a team is entitled to such.
c. An alternating-possession throw-in when the point of interruption is such that neither team is in control and no goal, infraction, nor end of quarter/extra period is involved.
Applying this would give the ball back to the throwing team at the original throw-in location because 4-36-2b does NOT say ball location. A casebook play could be added to clarify this.
I'll pass this along to my fellow NV official who is on the NFHS rules committee. The wording needs some fine-tuning to account for time-outs, but I think that we can make it right.
