Audio segment in continual upload

I created a half hour podcast with one guest. 4 or 5 segments are stuck in continual processing/uploading mode. We re-recorded them, so I have the content. But I cannot delete the segments and they are stuck. I have tried logging out and logging back in. Completely shutting down the browser. Completely clearing cookies, history, etc, and then reloading the browser. Shutting down my computer. Nothing makes them go away. Sometimes they will even say "upload failed" and they still won't go away.