It would be great if you could posta video of yours, for diagnosis...
1: A proper knee bend makes a smooth delivery much easier. You can hardly influence the pendulum in itself, unless you muscle thingts a lot, and it is not necessary at all. But you can influence the ball's path if you "add" a good knee bend movement to the pendulum, getting it in sync with the ball's forwards movement.
2: Let go! It sounds dumb, but it is that easy. Concentrate to let the ball go with the thumb just a moment before it reaches your sliding foot's ankle (see above). This requires a proper ball fit, so that you do not have to grip the ball too tight in order not to drop it in your swing.
3: Honestly, if your release is in itself poor, a wrist support will hardly improve it. It can take some weight from your wrist and tendons, but you still have to keep the hand firm and behind the ball - otherwise you get (just) revs, but they are ineffective.
Keep the hand firm and behind the ball. Do nothing else, avoid the chicken wing, as Atochabsh mentions, and just make sure you get the timing right (see above) and can let the ball "roll" across your fingertips forward, once the thumb is cleared.
4: Keep the hand behind the ball! The spinning can also come from a late timing or a bent upper body, which make both a clean release impossible because you do not have the chance to get the thumb out of its hole in time. Again, a video could help, and any revs you might develop (also through a wrist device) are rather ineffective because this release flaw promotes spin, and not a clean and free roll of the ball.
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DizzyFugu - Reporting from Germany
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