You raise a good point about OBE's being used as a healing tool for trauma. I use this a lot in my practice as a hypnotherapist. Many past life regressions are forms of OBE using phasing rather than Real Time Zone experiences. And, past life experiences are extremely healing, especially for phobias and fears. Healing also occurs just by realizing we are more than our physical body and will continue existing in another form after physical death.