This treatment you can see as a kind of extension of the traditional Thai massage. Especially it focuses on the back and everything what is connected to the bag.
Some basetechniques from Chiropractic are used too, but it is absolutely no replacement for it.
I will look at the state of the spine and we will do some excercises to eliminate tension in the muscles to make the spine more flexable. You can see it like a kind of maintenace for you back/neck and limbs. Everything will be loosened and of course any pain caused by tension in the muscles will disappear.
In case of problems with the spine I will refer to a (good) chiropractor.