The mirror is an assembly that "clips" onto the motor assembly. Here are some notes that may help.
1st: The mirrors are electrochromic glass. If broken, don't let any of the electrochromic get inside the vehicle.
1. The top inside corner is the best location to pulling the mirror out.
2. Push the bottom outside corner of the mirror in as far as it will go making the top inside corner stick out.
3. Grab the mirror on the top inside corner and pull upward gently and the mirror should come off.
4. If it's a heated mirror, there should be electrical connectors on the back of the mirror.
The mirror/glass is attached to a plastic housing with an edhesive that is impossible to seperate. The back of the plastic housing contains a mounting detail (ring) that is approx. 3" dia with 4 pairs of fingers". Each finger is tapered and designed to snap into slots arranged in the detail attached to the interior of the housing. There are 2 push/pull bayonet type electrical connections that need to be disconnected prior to removal. The method used for the removal of the plastic housing was to SLOWLY pull the lower outside corner of the mirror out of the housing in kind of a "peeling" sequence...............................Spare glass sub. ordered and should be a "snap" to re-assemble (famous last words)..