I'm sorry your brother had to endured that treatment.
I remember a girl in my congregation who was 'publicly reproved'. It was a great shame for her entire family, and they never returned to our Kingdom Hall after that night. I felt outraged that such mistreament and abuse toward someone I knew could occur in such a shameful fashion. When I questioned why they would go about doing such a thing, I was informed that she must have done something sufficiently wrong that at least some JW's must have known about it and therefore "some action" had to be taken to set an example for the congregation. What bunch of crap!
I wonder how she is doing now?