The reason that BillD and other "self-tonsured" folk would find the research useful was that, rather than trying to explain or account for Out-of-Body Experiences, it's intent was to figure out why we perceived our sense of self to be where we do. And they discovered that, by placing the eyes behind the perceivers head, they relocated the sense-of-self to that place.

I am not sure that this is a great revelation, but, as I said, it would be helpful to those who cut their own hair if they could see their head from behind.