Looks like I will be poking a hole in it. Thanks.if it's what i think it is, the release is on the side inside the housing.there should be a tiny hole for a peper clip.
if not the common method is to heat a paper clip and press it through.
10 seconds of google results
I did the same thing. sorta splits open, then closes back up again.I ended up not having to drill a hole heating anything up to press thru. I pushed an awl between the halves of the housing in the area shown in the picture and the seatbelt released. Easy and no marks left on the housing.