Reply To: Can I resize Frames Automatically if they are threaded with breaks?

A less than perfect way: click each text box, ctrl+X (cut), ctrl+option+shift+V (paste in place), now the text box is unthreaded and you can use ctrl+option+C on it.

You have to work backwards from the last text frame to the first, otherwise the text reflows when you cut it. Also slightly ugly, the text boxes have no thread 'entry' but they have an 'exit' (red arrow at the bottom right for the text that is now considered unplaced).