At a guess, something is holding the files in a locked state. Windows has tagged them for delete but cant complete the task until the files are released. Kinda like when you update some windows files/dlls, the new ones cant take effect until you reboot.
As to what is holding the locked, it could be your AV software or windows indexing service.
On 2003 Server, we had a file share for people to update the web pages. When the delete a file it was still there, then the next day they where gone. It was the IIS Indexing service.
Bookmarks