... how I do it:

I first delete the post, then I keep hitting by back button until I come back to "preview" which bypasses the whole index (board) and my last final post. When preview is up I simply delete whatever I wish within the post and "preview" once again (I'm already there). The only person who knows I've done this is the person to whom I'm responding (if it's a response post), because I'm exactly back in the same location within the thread but that person has received an e-mail notice of my response for the second time and also sees the "no message" notice when they click on to the original post which is no longer on the index.

I can do it here and now if anyone wants to see what I'm talkin about.

JB