Ok... I just watched that video and the father says that Tigger "clocked" his son. It is clear to me that the kid did something and Tigger wrapped up the kids arm that was behind him (Tigger) and then turned. Tigger's other hand (IMHO) accidentally hit the kid (barely) in the face. I say accidentially, because it doesn't look to me that he could see where the kids was exactly.
So, the hand in the face was a accident and the kid even admitted he was kidding around with Tigger. And the family is saying it ruined their vacation? SHUT UP!!