Also known as: Jambes

After a legs catch you are hanging upside down in the catcher's arms. Arch your back up into the apron. As you swing back towards your bar, twist your body (the catcher will help) so that you are able to let go and grab your bar at the peak with your hands.

These notes are provided ONLY as an explanation of the trick.
If you want to perform it yourself - get an expert to teach you.