2001 S500 driver's side mirror

[Trbulnc]

Hey all, did a search but nothing showed up. My driver's side mirror on my S500 has turned a yellow color. Dealership wanted $600 to replace it and I said no way. Bought the glass online and wanted to make sure the correct way to remove the old glass and install the new without breaking something. The back of the glass just appears to have 2 tabs. Is there a secret to removing the old glass from my housing or does it just pop out?

Thanks!