Backcourt?

[refiator]

A-1 in the frontcourt passes to A-2; B-1 deflects the ball toward the backcourt; the ball bounces once in the frontcourt and into the air in the backcourt; A-3 goes into the backcourt to retrieve the ball and catches it before it hits the floor in the backcourt (A-3 has backcourt status). Is this a backcourt violation? Why or why not?
I say this is a backcourt violation. We must look at the status of the ball and who caused the ultimate status of ball similar to an out-of-bounds play.