Side mirror disassembly

I've looked through my chassis FSM and searched this forum...is there a release mechanism that I'm not seeing, or do I have to custom bend some screwdrivers to get to the Phillips head screws behind the actual mirror glass?
What I'm actually trying to achieve, is to get down to the bottom screw that secures the mirror housing to the mirror base. That darn thing is loose and wobbling all over. View attachment 337964
Author: BLIMP