Is this a Backcourt Violation?

[tref]

After a made basket, A-1 inbounds the ball to A-2 who is heavily contested by B-2 near the division line. A-2, in the FC, tips the ball away from the coverage and the ball goes into the BC. A-2 is the first to grab the ball.

Is that a controlled tip by A2? Or can no tip be ruled possesion like a tapped rebound that goes into the b/c?

I cannot think of a time where I've seen a b/c endline throw-in go into the f/c & tipped into the b/c by the offense.