File this under 'required reading.'
Please head over to myphysicaltherapyspace.com, specifically to the entry on evidence-based practice and myofascial release interventions. This is an excellent discussion and I hope you all have the chance to take a look at it.
Myofascial release is a modality that is much more widely used in physical therapy than occupational therapy, but it still crops up in OT interventions from time to time. I am especially concerned about so-called craniosacral therapies and the ways that some therapists combine these dubious interventions with other OT quackery.
I really don't have more to add than what was posted by Jason Silvernail, DPT - so please go read his excellent entries!