[Glosboxster]

I was on the button closing the passenger side window and there was a sort of "click-click -click" noise and the window fell back down inside the door.
I managed to get a pair of pliers on the very top of the glass and was able to pull it up.
The window moves freely by hand. Up and down. Its as though its detached from whatever mechanism should be holding it?

Has anyone out there had a similar issue and what should I be particularly looking for before I carefully remove the door membrane?