It depends on what is causing low back pain. If it is caused by tight hip flexors, Yes, it will. The Unlock Your Hip Flexors program can certainly help with Low Back Pain caused by muscle tightness, postural deviation, and gait deviation.
Tight hip flexors are what beat up on your lower back. Having tight hip flexors results in strong anterior pelvic tilt which then causes an excessive curve in the lumbar spine. Since tight hip flexors draw the spine anteriorly and inferiorly towards the femur thus you will have a significantly tight or arched back. The program will help in correcting the muscle imbalance and bring about pain-free movement on your hip and back.
When you unlock your hip flexors to the proper length, it will make it easier for you to keep your spine neutral. Keep doing on Unlock Your Hip Flexors program and your backache will be cut in half, but will probably disappear.
However, if the source of your low back pain is vertebral changes in your spine (i.e., spondylosis, spondylolisthesis, spinal fusion, scoliosis), or arthritis, then program may not be the ideal program for your condition. It is best that you know the root cause of your pain in order to be given appropriate exercises.