It should probably go without saying. But it's nonetheless worth expressly holding. As well as publishing (albeit somewhat belatedly).
The police can't handcuff someone just because he's 6'6". If he's cooperative, and there's no real reason to believe he's a threat, you can detain him, but can't handcuff him.
Good to know. Even for those of us, like me, who are a full half-foot-plus shorter than 6'6".