In my experience as a full time bodyman, the glass I broke while removing usually did so because I rushed it.........I'd be pushing the glass out before it was cut all the way, and CRACK........so GO SLOW! The brass wire is the cats ass, I wish they had it 20 years ago........anyway, start wherever you can push a sharp putty knife or equivalent through, so you can snake the brass wire through. Cut about a 3' piece of wire, wrap each end with some sort of handle (I have used anything from wheel weights to screwdrivers) then saw back and forth. Try to angle away from the edge of the glass whenever possible. It isn't rocket science, but did I mention to TAKE YOUR TIME??!! LOL!