Found this feature while deleting a 50gig backup archive.
While deleting is in progress, right click any file link/shortcut. Start8 will hang in the foreground until you pause delete action. If you push the pause button on the file progress window, the right context menu will pop up where you click on Start8. Menu and Start 8 will disappear as usual if you click anywhere off the menu.
Love Start8 - Made Windows8 usable!
Thanks,
Adam