To reword:
You saw a strange man following your minor brother. He then started approaching your brother. You had no idea what this stranger's intentions were. You told your brother to run.
As stated above, you need to keep your mouth shut and consult a lawyer. (Also, a former judge, lawyer...
I know you're a straight shooter, and I think I'm misunderstanding your message here. Are you stating that the lesson for OP is to mind her business if she thinks a child is being abused?
Well now he wrote a lengthy letter to the UI officer which she is forwarding to us. Should be a fun read.
There's an awesome unemployment consultant who posts on a couple other boards. Too bad that person's too "shy" to come here - s/he'd probably be a great help to your former EE.