Never heard the term "sit sideways." Sounds like something you do at a bar, lol.
Chowskates has a great sit-into-broken-leg-sit-spin move: blink and you miss the transition!
http://www.youtube.com/user/chowskates#p/u/37/tC5_L3yyCDsIs this what you mean by "sit sideways?"
Most of the for IJS qualifications discussed at PSA conferences are based on TORSO positions, not free leg.
The bellybutton is considered the "arrow" and it needs to clearly face in the right direction to get a good call.
Ex: Camel spin positions:
. Bellybutton down: Basic Camel
. Bellybutton sideways: Doughnut or stacked Camel
. Bellybutton up: Layover
The skater cannot simply turn their shoulders to face upwards for a Layover, their torso has to be facing upward as well.
Edit: I stand corrected - the USFSA Tech Notification 70 uses the term "Sit Sideways (SS)"
New to me!