U.S.S Sandy Hook star trek plot (cancelled episode)

I worked on the post production team for the next generation star trek franchise in the 80s. It was not until I came to this forum last week that I remembered a plot for one episode that entailed the death of a whole crew on board a ship called the U.S.S Sandy Hook under command of Captain Lancer. The plot was about the captain being ordered to kill the entire crew by order of the federation as they were ill with a radioactive virus that threatened earth should they return. The enterprise finds the sandy hook with the entire crew dead in the hanger and the mystery begins. We were told to pull the episode because the network thought it was too grusome for family viewing. The storyboards still exist and probably the scripts. I'm thinking that it's just a bizare coincidence but had to share this with the forum given the nature of recent events in sandy hook.