No idea if anybody has any knowledge on ski ballet or whether this is related to OG freestyle skiing..
In this article with old school hot dogger dude, http://www.greatoutdoors.com/blogs/gordys/20091106/blazing-skis-%E2%80%93-wayne-wong-the-face-of-freestyle-skiing , at the bottom summary it says he likes 'to perfect his 720 carves at his home base Alpine Meadows.'
Any ideas on what a 720 carve is?