If you do that when I'm on the ride, I will physically shut your mouth.
And let's be real about the idea of physically moving someone's hands out of the way. That statement has already escalated the tension in this thread. Imagine how it would escalate in person. Is that the example you want to show your kids?
Little Suzie's diary:
"Dear diary, today a man on Tower of Terror put his hands up during the ride. My daddy didn't like that because he wanted our picture so he pushed the man's hands. I screamed and daddy got into a fight. I cried when the police man shot my daddy with wires and made daddy flop around on the ground like a fish. Mommy says all our money was spent on bail and we have to go home. Mommy and daddy aren't talking to each other. What's a divorce?"
Or, she can write this:
"Dear diary, today me and daddy rode Tower of Terror 5 times until we got a good picture of us on the ride. It was the best day of my life. I love my daddy."
You pick.