I too recently installed the mod then uninstalled it when I found that you could not switch back easily to the original game for online play.
I didn't see an uninstall option but maybe I didn't look closely enough. I removed the whole kit and kaboodle manually, cleaned up the registry and temporary folder and then did a clean re-install of the game.
It's interesting that I've been getting a few game crashes since, which leads me to think that something is still not quite right with my setup. I got similar crashes last time I tried a mod. Mods are interesting but are prone to bugs and the mod appears to have not been worked on much for a couple of years.