Can piriformis sydrome cause sharp stabbing pain in lower back more to side area of back when twisting to the side plus muscle spasms in back at night?

Yes. Piriformis syndrome describes the set of symptoms that can occur from an abnormal piriformis muscle/tendon. The piriformis begins in the pelvis and inserts on the hip and can cause back , hip, and buttock pain as well as pain that runs down the leg.