Anyone know how to remove Rear C-Pillars?

(I'll move this post afterwards, but wanted to make sure it gets seen, initially)

Looking to install Tweeters back into my rear C-Pillars (Touring /Elite), but can figure out how to remove them, a the Tweeters need to be retained from the rear of the panels.

I originally had them installed (& removed) by my Installer, but I'm looking to save some money and do it myself.

I looked on YouTube and could not find anything..

Any/All help is greatly appreciated...
Steve