Backcourt Violation?

[New2AZref]

The following happened earlier today:

Ball is being inbounded in the frontcourt, near midcourt, opposite tableside, by Team A.

A1 is throwing the ball inbounds, and throws it towards the backcourt.

A2, who has both feet in the frontcourt, jumps to catch the ball.

After securing the ball in the air, A2 then lands in the backcourt.

My call: Backcourt Violation.

My partners call: legal play

We got together on this, and he insisted that it was a legal play...and did so in front of the coach to begin with...... and during our conversation it was obvious that he didnt agree with my call.

Rather than argue, after the conference, I blew my whistle and we gave Team A the ball back.

Constructive Criticism Please