First, can you OBE at will and hold yourself in the vibrational phase? RB was doing research some while ago with very developer (spiritually, energetically, etc) people getting them through kundalini while in the vibrational state. Said that in that way kundalini raising is much safer and generally less extreme. You might want to try mailing him about it - but dont expect a quick reply, I haven't heard from him in a while and I was mailing about seriously important stuff.
Rob
Rob