«By the way, literally pulling out a window without first removing the bolts that fix the window onto the window regulator will break the glass, as far as I know. I might have misunderstood your question entirely.»
Then what aboth the windscreen? No bolts, just a rubber tape (no idea how to name it in English...). To remember replacing the windscreen in my old Aleko 2140 "Univeral", and all one had to do was just:
1) Tuck the rubber tape's inner endge behind the flange of the window openning
2) Gently push the glass out (from the inside), while someone should be outside and keep the glass from falling and breaking...
EDIT: This looks like my old car: http://foto-avto.narod.ru/foto/1/1260.jpg