Harold, like, the children, is still under Irons' spell, but, as with the children, it's a subtle, subconscious control and leaves the conscious mind free to otherwise act normally.

Harold catches the quarter automatically. He stares at it.

Then he digs into a pocket and pulls out another quarter, much weathered and tarnished, but minted identical. Oregon, 2005.

"It's him! He's the kid from the future... when we... traveled..."