Other Names: Suicide, Crash Dive
This trick is essentially the same movement as either a Straight Jump or a Shooting Star with slightly more rotation.
For the Shooting Star method, force-out high and tap your feet down as you let go, and rotate forwards onto your back with your body straight.
The Straight Jump method involves three leg kicks (backwards, forwards, backwards) but slightly later so you reach the peak with enough rotation to land on your back. The Straight Jump Swan Dive rotates under the bar, whereas the Shooting Star lifts up over.