Here's how chronic back pain usually begins. You overdo it one day working in the yard or doing something else (glute muscles are often the culprit in LBP, btw). Instead of just backing-off, resting up a little, and realizing you'll be fully healed in a week or two, you worry and go to the doctor. The doctor performs MRIs and tells you the pain is likely due to your spine. The doctor sees something on your MRI which is common for most people as they age and usually not a problem and tells you that it's the cause of your pain. It was probably there long before you had any back pain. You worry more. The doctor's post hoc reasoning about your pain causes you to believe you have a damaged spine and you're stuck this way. Your pain now worsens and becomes chronic because you are afraid of moving. The doctor refers you to an orthopedist or a spine surgeon, etc.Aha! So, if I believe my injury was a result of repeatedly being in the hunched over position (my original back problems started after a 3 day tube fest of 3 hour sessions), should I also train with some degree of flexion?
My friend is a spine surgeon and says there's nothing to operate on in most of the chronic pain patients he sees. He refers them back to pain care. At most pain care clinics they give you antidepressants and muscle relaxants which make the problem worse.
If you want to get better, educate yourself about pain and ease back into the activities you were doing before. Otherwise, you won't get better. .