[whpalmer4]

Interesting. I'm not sure what might be going on there. Have you quit and reopened OmniGraffle? If you still have the original template file open in OmniGraffle, you can cmd-click on the window title and get a list of the folders showing where it is. You might also see if a freshly downloaded copy of OmniGraffle still has the rogue template—maybe you somehow managed to save the rogue template into the application bundle next to the built-in templates?