There's a patch of double sided 3M tape and a plastic snap nipple in the center. If it's loose, the nipple and tape may have been compromised. I wouldn't worry to much about it though. The wing would function with out the center post. The sides are what holds that thing together. If you're anal about it (which is fine), you can remove the wings from the sides in order to access the center post, but you'll need new stickers to cover the holes on the side, 3M tape and a replacement plastic nipple.