Interrupted Dribble - Out of Bounds

[CallMeMrRef]

Rule 4-15 Art 6 d. indicates that O-O-B violation does not apply on the player involved in the interrupted dribble. Can this be incongruous with rule 9-3 Art 3 - A player shall not leave the floor for an unauthorized reason?

Here is the play: A-1 catches the ball in his frontcourt near the sideline opposite the table. Defender B-1 sets up in LGP. A-1 begins a dribble and does a spin move toward the sideline and momentarily loses the ball around B-1 - the ball never goes out of bounds. In the course of his spin move A-1 steps out of bounds to get around B-1. A-1 is the first to touch the ball after reestablishing in bounds status. Assume that B-1 maintained LGP throughout the play. Violation under 9-3 or OK under 4-15?