Thanks to Kwikt for adding this post.
[quote name='kwikt' timestamp='1389747320' post='154350']
It's been a while but here ya go.Turn the mirror base towards the door and you should see on top an allen screw beneath a rubber plug(remove). Loosen or remove the screw and the mirror is loose. pull away from the door and unplug the connector from the outside. NO NEED TO MESS WITH THE GLASS!!! I can double check this weekend if needed.
[/quote]
I will give that a go, since I need to replace the rubber gasket between the mirror base and the door. The driver side mirror is also a bit loose, so hopefully the base can be tightened up without having to go in behind the inside door panel...