The Sigma Iotia episode

[MrPointy]

I really think they should have done it. It probably could have been the best Trek parody in history.

Not as a replacement for "Trials and Tribble-ations" of course, because that was an awesome 30th anniversary tribute.

Maybe Behr and Co. could've ditched "Let He Who Is Without Sin..." for it.

 

[Flying Spaghetti Monster]

"Sin" aired right after the tribble episode, so no it would not have done that