Double Foul POI question

[PIAA REF]

NFHS rules,
I was told that I was incorrect and even after reading the case/rule book I don't know if I was or not. Please Advise:

A1 is taking the ball out of bounds under his own basket. While the ball is still in the hands of A1. B2 and A2 are whistled for a double personal foul. With the ball never becoming touched on the court and still in A1's possession doed A retain possession under the POI procedure. Or does this become an alternating possession issue since there is no team control during a throw-in(in high school)

Please site case and rule reference and let me know.

(I thought A retained possession, with POI; I was told that it went to the arrow because of no team possession)