Personally I came to the conclusion that OBE's are just another form of LD. LaBErge and Tholey seem to agree. After seeing what my mind can make in a normal LD, SoundsTasteFeelingsEmotionsScenarySmell, and phsychokinetic powers 8) the realistic 'Out Of Body' feeling would be no problem.
Besides which I defy any nasty spirits to try and take my body whilst I'm away. I'd smack his 'Astral' lights out. Bring it on!!