...you've got a back issue which looks like a hammy. Stretch it all you like (and looks as if you have) but it won't get your (pain free) back issue any better.
The tightness is protective - trying to take excessive load off of your nerve or back. If you get rid of it a la stretching/massage it'll just come back, each time just getting a little worse
Google slump test and see if it fits you...
...give it a month and you'll be feeling as if you didn't have them realigned...which is not a problem as they were never out of alignment in the first place
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