Lower Back Scoliosis - what exercises for Obliques?

Hey,
I'm 33. I found out too late that I have Scoliosis(lower back/basin slides to my right).
I sit 9+ hours in an office.
My LEFT oblique muscles are very (too) well developed and the ones from the right side are missing.
Except daily swimming / aerobics, please suggest some exercises that I can do at home in order to bring the right side muscles to a healthy proportion.

Notes:
1). When I do exercises that require equilibrium / symmetrical tension, the muscles from the Left side tend to compensate for the missing Right ones, and I don't think it's helping...
2). I'm not sure 'External/Internal Obliques' are the ones I am referring to. They are to the side, above the Ilium / Pelvis bones.
3). I am 70 inch tall & 127 pounds.

Thx!