it just helps the individual to fully experience the emotion (not suppress it like we so often do), and then let go of it when we're ready to do so. The key is coming to terms with what we're feeling and why we're feeling with it, and then making a concious decision to stop letting it control us.
The book does give the initial impression that the method is all about allowing your feelings. Look a little closer and you see that the exposure to the emotion is very limited. The Sedona Method specifically discourages understanding what you are feeeling and why you are feeling it. It says,
"Wanting to understand or figure out why, or from where, problems arise can also be a major obstacle to letting them go for we have to hold on to our problems in order to figure them out."
It also presents a false choice between understanding your emotions and being "free" of them, as if you can only have one or the other.
"Would I rather understand my problems or just be free of them?"
It appears that what is being "experienced" is the physical sensation only. This is why I see it as a form of dissociation; the physical sensations are not associated with the triggering thoughts and events, past or present. Here is a good link which explains why techniques such as this are a form of emotional avoidance.
This page has a good model of emotional processing which shows the importance of linking your emotional state to the causative event.
So I don't think it is a helpful technique, but I want to be clear that it is The Release Technique my husband is involved with and it was after he went to the 7 day seminar that his personality changed radically.