Nice link, Zen!
Spines can be deranged, hips can be deranged, people can be deranged...
The really groovy thing about MDT is that the PT teaches you how to fix yourself. You reduce your own derangement using your own normal body motions, so you don't have to keep going back over and over again and having someone else reduce it for you.
The vast majority of the time, I don't even touch my patients. They fix it all themselves. I just guide them and watch how their body responds. (the body really wants to fix itself)
"If Americans want to live the American Dream, they should go to Denmark." - Richard Wilkinson