[Zope] It exists... and yet it doesn't!

I have a bizarre error/bug/feature here... I have a folder whose contents behave very strangely. Any file named index_html reverted back to the standard for newly made DTML Documents after a few minutes, but luckily I was able to delete it. However, while I wasn't watching the external methods that also were (and still are) in that folder mutated into folders themselves - and now they are impossible to delete, I get a keyerror. If I try to enter them, or do anything else I get 'resource not found'. I can't delete the parent-folder either. So: how do I get rid of them? t.