Foul on a Free Throw

[stosh]

NCAA rules in an AAU game.

A1 is at the free throw line shooting the second of 2 shots. Team A is not yet in the bonus. After A1 releases the ball but before it hits the rim or goes in, (she never leaves the floor) B1 comes in to box her out and knocks her to the floor. Too much contact to ignore. My partner calls the foul but now confers with me whether it is a technical foul, a shooting foul, or just a common foul. He thinks it is a T; I think it is just a common foul with team A getting the ball out of bounds. My justification is that since the ball was live, it can't be a T.

Of course NFHS would be a different story. There I say it would be a T since the violation by B1 caused ti to become a dead ball.

Any thoughts?