With Events Manager, how do I completely take off an event deleted from "All Events"?

I’ve activated the Events Manager plugin. I deleted an event, and recreated it. For some reason I still have 2 Symposium Events on http://www.musicandmedianetwork.com/?page_id=25?? The one ending in -4 is the one that should stay. How do I take off the other one if it’s not even listed in “All Events”?