If you mess-up a #LINKTO page (where different story-threads come together again), it's not possible to edit the link, because every time you try to view a page with LINKTO in its source, it just redirects you to whichever page that link points to. It needs something like Wikipedia's "?redirect=no" URL, to specify that you want to edit the #LINKTO itself, rather than the page it links to.
you can go to "manage stories" - "my threads", search for the thread with the #LINKTO and click on "edit" in the last column
