OOB...on a cheerleader!

[Danvrapp]

I'm lead, A1 drives from wing to low block in front of me and throws a pass that hits B1 and the ball bounces away--through the lane--parallel to the endline. The ball is clearly going to head OOB on the far SIDEline on C's side (once it gets that far) but a cheerleader (we'll call her A2, since she's cheering for A1's team) positioned on the end line decides reach out ON TO THE FLOOR and grab the ball. Whoops.

When she reached out and grabbed that ball, my mind did 50 things, but my whistle did nuthin'. My partner--the C--calmly blew it dead and stepped down to gave the ball to B, reasoning that it was A's cheerleader that caused the ball to go OOB. We sold that story to A's HC (he bought it, no problems), gave the ball to B, and played on.

Anyone handle this one different? Anyone want to award the ball back to A since it was last touched by B? Should this have happened late in the 4th quarter of a close game, I can see both teams making an argument for possession. Anyone use the arrow in that case? My officiating intuition says the ball has to go to team B if both coaches are aruguing for possession.