I think I mentioned this before, but can't find the post.
This episode recording was interrupted, so I found it airing again in the guide and marked it as not recorded, but that didn't work.
I then used the curl method which returned true, but that didn't work.
curl -XDELETE http://x:8089/dvr/programs/pluto%2F5eb457c71b274e001a2adec0%2FS1E1
I then changed the pass to Re-record deleted episodes, then trashed and deleted the interrupted episode recording, but that didn't work.
It's still in http://x:8089/dvr/programs
"pluto/5eb457c71b274e001a2adec0/S1E1": "recorded-691"