[Gnomasz]

Based on Characters only, I'd say it's a straightforward use of Group Intimidation -- just clever enough not to be Specious, so it doesn't require a Fast-Talk roll. He could take one out, so no Fast-Talk to convince is needed, but they still might feel safer thanks to numbers ("it won't be me" or "we'll help each other"), so the penalty for intimidating a group of people applies.