Asanas for the twisted

["Regulus Magus" <RegulusMagus@...>]

Good afternoon to all!

I have finally (after 6 months of work!) finished step 1. So . . . 
now I have a step 2 question. 

I have a curvature (twisting) of my spine that makes sitting erect 
physically impossible. Indeed, the only sitting posture I can manage 
without straining my back is to lean back in an inclined position 
with the back fully supported. Similarly when standing I cannot stand 
motionless without incurring back pain (I must constantly move and 
shift position to take the strain off individual muscles). Could 
anyone suggest how I can adjust step 2's asana exercise around my 
particular physical problems? Is lying down a legitimate asana?

Respectfully, /RM/