Audi Repair: Mirror replacement on an Audi A6, interior mirror, audi a6 avant

Question
How do I remove the interior mirror head from the windshield of a 1999 Audi
A6 Avant. I'm afraid I might break the windshield.

Answer
Not quite sure why you'd want to remove it; a new mirror can be put onto the existing pellet.  I've never had to remove one, they always fall off when you don't want to!  Perhaps a sharp blade?  Sorry I can't be of more help, let me know how you get on,  Jan