I know I'm like a broken record on this, but I cannot recommend Alexander Technique enough for back issues. It teaches you what your postural habits are and how to work on correcting them yourself. Where chiros put your body back into alignment so your muscles can relax, AT teachers relax your muscles so your body can properly realign. I use it all day everyday, no exaggeration.
Yeah Scola! I feel like this deserves a SVW-style congrats. Like, VIRTUAL VISUAL VALIDATION VICTORY.