>  this it looks like an interesting tool how exactly did you use it?
>

basically to pull the inside rubber seal away from the inside window
frame while I sprayed in rubber lubricant (use Armour All or soapy
water if you don't have a specialty lube)  I then inserted a
clothesline cord (metal strands coated in vinyl) to keep the seal
away from the window frame.  A few firm presses the windshield came
out....without breaking.

Key to success was using lots of lube.  This tool helps get the lube
under the seal and make room for the cord.

I'll document the procedure with photos next time I do it....

-Paul