Yes, it was imperative that he be portrayed as a lone nut (which he was), and to not disclose anything that might be construed (correctly) as suggesting that he had been sent back to the U.S. (with a probable KGB-agent wife, according to true-defector Pyotr Deryabin) on a mission to assassinate JFK, and that he had "gone rogue" when Khrushchev tried to call it off.
-- MWT 
LOL, so you are a CT then (Coincidence Theorist).
And it was just dumb luck that Oswald landed a job in a building along the motorcade route, plus a dozen other "coincidences" that served up JFK on a silver platter to a lone nut. Was Thomas Arthur Vallee a KGB double agent too?
So how many backyard photos did his KGB wife Marina take and why did some of them wind up in the darndest places? Did Khrushchev get one?
You have to be pretty single-minded to think that the KGB could have contrived all the coincidences that led up to the Big Event, but you are like a dog with a bone. In for a penny, I suppose.