When I have took mine out in the past I point them as far in as I can so I could get my fingers in behind and carefully pulled till you hear it pop off the bracket, with the heated element I can only assume there will be a wire to undo.
It's 5second job ...
I just put the mirror down with "joystick" on the door ..and then you have good position to "unclick" the glass with you hands and its in your hand in a second... Just need to be careful with wires for heating..
Now I have 2 positions that showing the temperature .. On rs monitor and on the speedo.