When Coach Fields is "Yankin' off horses," his hands are under the horse. Then it cuts to Freddie, and Coach Field's hands are on his lap with no time for him to achieve this
Bill Buckner was looking left toward the dugout, since the game was in New York he would be looking into the New York Mets dugout not the Boston Red Sox.
The batter of the New York Mets that was shown (Mookie Wilson) was wearing number 8 and not the number 1 uniform that Mookie had worn in 1986.