Is this correct? (NFHS)

[referee99]

... page N15,
Losting balance on a throw-in

Play: A1 is holding the ball for a throw-in. Prior to releasing it, A1 loses his or her balance, reaches out and touches B2 who is standing inbounds and guarding A1 on the throw-in. A regains balance and completes the throw-in. Is the throw-in legal?

[just another ref]

Originally Posted by referee99

... page N15,
Losting balance on a throw-in

Play: A1 is holding the ball for a throw-in. Prior to releasing it, A1 loses his or her balance, reaches out and touches B2 who is standing inbounds and guarding A1 on the throw-in. A regains balance and completes the throw-in. Is the throw-in legal?

According to 9-2-10 Note: no

[BillyMac]

Originally Posted by just another ref

According to 9-2-10 Note: no

The thrower may penetrate the plane provided he/she does not touch the inbounds
area or a player inbounds before the ball is released on the throw-in pass. The opponent
in this situation may legally touch or grasp the ball.

[OKREF]

Originally Posted by referee99

... page N15,
Losting balance on a throw-in

Play: A1 is holding the ball for a throw-in. Prior to releasing it, A1 loses his or her balance, reaches out and touches B2 who is standing inbounds and guarding A1 on the throw-in. A regains balance and completes the throw-in. Is the throw-in legal?

Originally Posted by BillyMac

The thrower may penetrate the plane provided he/she does not touch the inbounds
area or a player inbounds before the ball is released on the throw-in pass. The opponent
in this situation may legally touch or grasp the ball.

Violation