Is this correct?

[Adam]

Originally Posted by BillyMac

During a throwin, or jump ball, any player; or a defensive player, in making a steal; may legally jump from his or her frontcourt, secure control of the ball with both feet off the floor, and return to the floor with one or both feet in the backcourt. The player may make a normal landing and it makes no difference whether the first foot down is in the frontcourt or the backcourt. These three situations are not backcourt violations.

Billy, I don't think the OP represents a myth. To me, in order to be a myth, it has to be a widely held misconception. In the OP, the official needs to look up when a throwin ends. He's right that you can't have a backcourt violation during a throwin; he's just wrong about when the throwin ends.