Will: Of the three you posted, here is one man's opinion.
Gardner finals -- I would have called it. High lift, downward force (and Ryne's reaction was a giveaway -- hands to the side). And the kid bounced.
Iowa City -- Nope. Offensive wrestler looked like he had complete control top to bottom.
Regional semis (was that DeSoto?) -- Yep, same move. Nope, not same finish. Ryne always had at least one foot in contact with the mat, which usually constitutes offensive body control. Against the Mill Valley kid, there was a lot more force.

Biggest issue is that Ryne is a phenominal wrestler, especially in freestyle and (I would assume) greco. Officials who are not as familiar with those styles are going to be more prone to call slams than those who aren't. I had a kid at Imac 10 years ago throw a side suplay once (folkstyle legal) and the official called him for it, because he didn't know the difference.

Ryne has really developed Will; that turk is a beauty and has always been a favorite of mine (although I never had anyone who could do it half that well). Hope he finishes up a great career with number 4!!!