In ice skating, it’s considered good technique.
Lizzy sends a link of some flying trapeze training.
Click PLAY or watch it on YouTube.
She crosses her legs in an attempt to increase speed of spin.
AND — more importantly — scissors on release to generate twist. (equal, opposite, concurrent reaction force … according to Newton)
She doesn’t consider “stacking the legs” a form break. Or bad technique.
Landing is a non-issue. Happily trapeze acrobats don’t have to “untilt” the twist, then STICK a landing on a hard surface.
Gymnastics Coaching.com 