Sorry I am a bit confused....you say this was a 'toy' that glowed, presumably therefore it was not alight? If so how can the cabin crew have told him to stop smoking....If it was a 'toy' that wasn't alight, then he wasn't.
If he wasn't smoking, then you may have a problem of false imprisonment....(you said he was instructed not to leave the aircraft until the captain had spoken to him). You can't detain someone (telling him he cannot leave is detaining him) unless by thier lawful arrest....I'm at a loss to see what that is? He may have been a prat...but that isn't a crime.