Library shows deleted experience

Hi folks--

We have a strange situation. We created and published a test experience, then deleted the project without unpublishing. We were able to unpublish via REST DELETE call. However, since the experience used a spatial target, it was added to the experience Library, and the REST DELETE did not remove it from the Library list. So, when I point my Thingworx View to the ES, the library still shows the deleted experience. If I select that experience, I get a "Whoops! 404 Not found" error.

How can I get the Library listing to update so it removes the deleted experience from its list?

--Clay