Or if you are watching it currently, and the last "Tivo menu screen" that you looked at was the one to launch the recording, just hit the left arrow. This should bring you back to that screen and you can delete it.
Roamio Pro, wired ethernet
Mini using MOCA (from the Pro)
on Cablevision Raritan Valley system (Central NJ)
w/ Cisco PKM803 CableCARD on firmware 188.8.131.521