Re training Overworking/ tight back muscle

In searching for a way to alliate the tightness/ discomfort in the erector spinae muscles, I have found that it helps not to lock out knees on any weight bearing exercise ( esentially keep knees bent)

This seems to disengage the erectore spinae muscles.
This knowledge leads to things to implement during exercise and daily life:

- Keep knees bent on all standing weight bearing exercises: [ Esp. squats, cleans, dead lifts, dumbell
work]

- Walking with slight bend in knee ( as much as possible) in home and in HSA exercise circuit

- bending slightly Forward on seated exercises

Similarity Lebron does alot of  bent leg exercises:

http://www.youtube.com/watch?v=Bl097GexsDM


For some reaso it is on full knee lock out in squats where shaking can sometimes occur.
And you also seem to be alot weaker In the bent leg position, core and glutes engaged. you will also get shaking in this position.

Looking forward to tryinbg this
There is no failure only feedback!