This is both legal!!
The GOALPOST consists of the pole and the net.
The post is placed so that the back of the pole is at the outside edge of the goal line. The line is 5cm wide but the pole is between 6,5 and 10 cm. The part sticking over is to the inside of the court, BECAUSE you can throw the ball against the pole and catch it again and you can throw the ball against the net and catch it again.
- Throwing against the pole as in the video. Totally legal, just make sure there is no footwork infringement by the shooter.
- Throwing against the net as in the video. This takes place from a Throw In. Totally legal, just make sure that the player first make contact with the court, before catching the ball from the net.
Teach this to your shooters and defenders.
Also: nothing prevents the defender when she need to make a pass and the clock is ticking to throw the ball against the pole while standing on court and catching it again if she is not closely marked.