The state of my back has improved by a significant margin. Flexibility motions throughout the day are key. With that said, I've placed an order for a copy of Stuart McGill's highly acclaimed book, Low Back Disorders. The most alluring aspect of it is the technical standpoint of a medical perspective, and the emphasis on dispelling popular myths on back mechanics and the exercises pertaining to it. His other publication seems to be more of a conventional fitness guide, of which I'm in no short supply of.
In the meantime, I've been making the most of my still~limited range of allowable movement. Hard kicks aren't doable at this point, nor are hooks and upper~cuts. I'm spending my time with straight punches, such as jabs and leads.