[Plugin: Admin Supermenu] broke my site

Activated the menu and a page came up with only a menu and nothing else. Very bazaar looking popups came out as I scrolled the menu, and when I started to click on menu items nothing happened. So there I was with a page with a menu on it that didn’t go anywhere when I clicked on anything. Since I couldn’t get to the plugins page to deactivate it, I needed to go in through ftp and delete it’s folder. Then I got my site back.