Is there a way to cancel the recording of a single episode rather than the entire series?

This change was made 3 days ago. The Plex for Windows/Mac desktop apps have their web clients updated every 2-3 weeks or so, so this should show up there soon. As for the server’s local web client, that is updated less frequently, and not always to the latest version. I wouldn’t expect to see this change there for a while. At any rate, I wasn’t attempting to sway you back into the Plex Live TV & DVR fold; mostly I wanted to ensure that you and anyone reading that particular point knew that it was something which has been acknowledged and is being addressed.

Back to the original topic… @mbarylski - There’s a request over in the feature suggestions forum requesting this feature (actually, there are more than one). Here’s the oldest one I found:

But here’s a newer one with more votes:

Neither is particularly popular, based on the number of votes cast, at least.