Hi,

If you've found the comparable spinal level (?T10 or thereabouts) then I'd start with very gentle or slow sustained mobilisations centrally thru the spinous process but directed laterally towards the painful side (usually most comfortable) and slowly redirect the angle more centrally and then towards non-painful side as pain allows. Gentle jiggles (?gr IV--) often work very well for Tx pain. The key is to position the patient in a non-painful position (most likely right side lying or prone on some flexion) and slowly work into less comfortable positions. Soft tissue massage either pre or post mobilisation tends to help alot too.

Low lumbar (R) rotations sustained may also work.

Good luck.