I have, on occasion, had luck putting the end of a flat file into the opening and using it to bite on the piece. With some gentle persuasion from a crescent or vice grip on the file, the piece would turn out. Careful you do not over torque the file!
I know... wrong use for a tool, but I had to make do, and I got lucky!
I know... wrong use for a tool, but I had to make do, and I got lucky!