Hi,
Not to sure about yoga poses to help spondylo, but there is a clinic in JLT called American Sports Rehab that has this amazing table called the HILLDT the guy mentioned that its spinal decompression sounded kinda scare , but i did about 20 sessions with them and for the most part I'm pain free, now I go about twice a month for what they call "maintenance" you can call them at 044522208