Can't uninstall trial version

I installed the trial version of TotalFinder but, while I like it, I think I will wait until Mavericks comes out to see if it works well enough for me. However, the “Uninstall TotalFinder” menu item does not work. Every time I restart, TotalFinder shows up again. How can I uninstall it?

Hmm, strange. Please follow instructions here: