Single Plugin In Different Location

My website has a public side (http://) and a private side (https://). As such wordpress is split between the two depending on what needs to be available to all and what needs extra security. Currently all of my plugins are on the private side and most must remain there. One however, needs to be on the public side.

Is there some way to get wordpress to look in a separate location for just one of my plugins?

I don’t want to change the default location for my plugins that I defined in my config, just point to a specific location for the one.

Thanks a lot,
David