The vibration state is a tricky state. I guess you was kind of "not there" until the vibration hits you, then you get aware of the state your in and what you are doing and tries to controll it kind of?
The trick here is to not become to alert over what happening, this will only result in waking up mentaly from the delicate state your in. You have to continue "not being there" even when the vibrations hits you with full force. After it is finished you can try feeling yourself, carefully(dont become to awake), in the dream scenario, feeling movments, sounds, textures and so on. Try to begin walking when you are in that black void right before you get into the dream, to get the feeling of movment. Once your in relax, and dont get to eager to do everything at the same time.