How?... Very, very carefully.
Seriously though, you have to remove the mirror plates. They unclip if you pull on them. There is a specific place to pull on to reduce your chances of cracking them, but even then there is no guarantee, those clips jold pretty strong. So be prepared to have to buy new ones... I did. Perhaps someone else remembers better than me what the spot is.
After the mirrors are our it's a simple 2 or 3 screws and your free.