Ghost Add-In

I was fooling with a speedometer addin, trying to see if it was worthwhile to use. Afterwards I uninstalled it from my addins. then closed Excel. When I reopen Excel, it no longer shows in my Add-Ins list, but is still opening with Excel, as an Add-in. How do I get rid of it?

UPDATE: I closed Excel, cut the add-in and moved it to another folder. That didn't completely fix it. When I reopen Excel, if I go to Developer, Addins, it doesn't appear. However, it still shows in my "Add-Ins" tab. The options are still available, but clicking on them tells me the addin may have been removed. But, my add-ins tab still persists in showing this one add-in. Help!