On a free TinyURL account, a TinyURL that you create cannot have its destination edited. Also, if you try to delete it, you are advised that it will be hidden from view, but that it still exists:
Remove TinyURL from List
Removing a TinyURL will make the URL not show up in
your list of TinyURLs, but the TinyURL will still function.
The TinyURL can, however, be renamed. I was hoping that by renaming it, the original TinyURL would then become available to reuse with a new destination.
Was I wrong to assume this? Or, does it take a while for it to become available again? Or, is there another solution?