you got it monty, grinek told this to bill pearl slightly before jcg died. he came in 9 th among the heavyweights that year. tony terlazzo was the the only american to win a gold that year. i actually met his brother john terlazzo several times when i bought equipment at the york barbell factory[he waited on me] in the mid 60's that's 1960's of course.
I recalled Grimek being an Olympian then, but never knew about the handshake deal. I don't even know much about history; this just happened to be one of the random facts floating around in my barren head!