1) be careful prying the staples out, or you'll slip and ram the screwdriver under your thumbnail (see my post during my rekeying case lock attempt).
2) there's no way a Craftsman manual staple gun will penetrate the seat pan plastic
3) there's no way a Craftsman manual staple gun will drive staples into the bottom of a deep, thin groove
4) I need a better staple gun and compressor
5) BMW in it's infinite wisdom glued the foam to the seat cover, not the seat pan. Separating the two tends to rip the foam.
6) for me, DIY usually ends up translating as 'that was frustrating, where's the band-aids?'.
Thank doG I stopped when I did, I must be getting wiser in some respect. Sorry, no pictures, I didn't want to get blood all over my camera.
I ended up getting the cover fastened back on (loosely speaking - no pun intended) such that you can't really tell it was monkeyed with, but the 'stapling' job underneath is something to behold. Reminds me of something my daughter brought home from arts & crafts class when she was 4.
As a lucky aside, blood rinses right off that vinyl.
I think I'll work on my wife's seat until I get the technique down...
Peter