Backcourt violation rule change? (over and back)

[Nevadaref]

You made the right call, but for the wrong reason.
Once the player picks up the ball and ceases to be a dribbler, the three points principle no longer applies. That rule is only for a player who is dribbling the ball. BTW it has not changed.

The relevant rules for this play are the ones governing ball and player location. The player location rule is 4-35. Articles 1 and 2 state that if the player is touching the floor in the backcourt, then that player is in the backcourt. When this is combined with 4-4-1, the appropriate ball location rule, it becomes clear that the ball and player remained in the backcourt during the entire play. Therefore, no violation of 9-9, the backcourt rule, could have taken place.

PS The 10-second count should continue.