Cross-legged solutions are called goofy in acroyoga. Here, too, you can see in the picture that the foot of the base is crossed under the other shoulder of the flyer. It is not an easy pose, it is mainly recommended for advanced acroyogis.
Videos
In the video, they show a calibration, that is, they practice how to step from one foot to the other in goofy star. YogaSlackers