Backcourt Violation

[Atreyu]

I was recently playing in a basketball game and had a discrepancy with the official. Here's the scenario:

Player A1 had the ball in his own backcourt. He passes the ball to player A2 in their frontcourt. Therefore, at this time, Team A has possession in the frontcourt. Player A2 was trapped and threw the ball to A1, who was still in the backcourt. Player A1 jumped in the air, caught the ball, and threw it back to A2 before landing again.

My belief was that the call should have been a backcourt violation. Player A1 was in backcourt and had not gone into the frontcourt when he touched the ball, therefore I considered him in backcourt. I didn't think that it mattered if he was in the air, he was still in the backcourt and had not gone into the frontcourt.

What's the saying? "You are where you were until you get where you're going."

Can anyone give me an answer and a rule to appeal the call? I need this asap too. :/ Thanks in advance.