XF 1.2 can't remove "social" addon - files missing


Well-known member
so i'm cleaning out addons, and i have this one that's been sitting in my xf install for a while, since i don't know how to get rid of it. when i try to uninstall it i get a "The files necessary for uninstallation of this add-on could not be found. Please replace them."

that's odd, since i haven't removed any files from my xf install... like, ever...

so, i went seeking this addon, but i can't find it anywhere, either in the resources area or even in the old resources archive.

so far my only clues are it's description in the addons area:


and it's option page:

does anyone recognize what plugin this could be? is there a way to remove the plugin without the files? thanks!