I hadn't heard of that techinque before so I looked it up here's a little video about it-
http://www.grastontechnique.com/Slide_Show.html

and a few other sites on it-
http://www.spine-health.com/research...chnique01.html
http://www.chiroweb.com/archives/19/20/03.html
http://www.1stchoiceonline.com/index...=1&pageID=8917

I would give it a try and see if you get results- as long as it doesn't hurt or make anything worse, which it doesn't seem that it would.