Hire a professional?
Or just..
Sit in the middle of the interior and gently, but forcefully, push the glass outward with both feet. After a few minutes it'll slowly nudge out enough where you can then pull it out from the outside. Make sure you blanket the front hood and a second hand is always useful.
Don't remove the metal trim from your rubber gasket until the windshield is out of the car. Also, don't forget to install the metal trim into the rubber, prior to reinstalling your new windshield.
Hope this helps..
Kevin
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