The title says it. I can't figure out how do unlatch the rear center seatbelt from the ceiling.

 

Anyone?

I also have an '00 OBW. I wondered why you were having problems, so I went out to my car to see how mine was hooked up to the ceiling. I pulled it out of the stowed position with no problem. When I tried to re stow it, it was giving me problems. So I took the buckle that is more square, not the one with the hook in the end, and jammed it up into the cubby hole. It stuck up there. In fact I could not get it to release. Got the flashlight out to see up in there, and discovered that I had jammed it into a seam in the top center of that cubby hole. There is a cream colored plastic piece with two little barbs that is probably meant to secure two halves of plastic trim together up there. The hole in that square buckle got stuck in those barbs and was wedged in. Look up there with the flashlight and see if this is what happend to yours. I was able to use a screwdriver to pry it out. There is a diagram up there which shows how it is supposed to stow up there. The buckle with the hook actually snaps, kind of, into a slot that is in the forward part of that cubby hole. When it is plugged into the correct hole up there it comes out easily.