NCAA-M Backcourt Case Play Change

[SC Official]

Rule 9-12.5 (new this year)
A pass or any other loose ball in the front court that is deflected by a defensive player, which causes the ball to go into the backcourt may be recovered by either team even if the offense was the last to touch the ball before it went into the backcourt.

A.R. 222
The ball is at the disposal of Team A for a throw-in. A1 attempts to throw the inbounds pass to A2, who is located in his front court near the division line.
1. A1’s pass is deflected by B1. A2 leaves the playing court in his front court and while airborne, controls the ball, and then lands with one or both feet in the backcourt.
RULING 1: Legal play. Since a Team B player deflected A1’s inbounds pass, when A2 catches the ball in the air and lands with one or both feet in the backcourt, B1’s deflection caused the ball to go into Team A’s backcourt, and a Team A player is permitted to be the first to touch the ball in the backcourt.”




I'm having trouble with this. A2 gained player control with frontcourt status after the B1 deflection. But this is still supposed to be ruled as legal? How can B1 be responsible for the ball having backcourt status when A2 had player control in the frontcourt after the deflection? If you gain player control with one foot on the ground in the frontcourt and then put the other foot down in the backcourt is that a violation?