Reniaa - you have reminded me of all that I don't miss about JW Land: judgementalism, holier than thou attitudes, etc, etc.
The fact that this Roberto is disfellowshipped is irrelevant (even the Society never lets your average JW know what someone is DF'd for). If he is shining light on corruption, deceipt and damaging practices of the religion he was once part of, people need to know about these things to protect themselves and their families. It's a label that has no meaning in the real world. In the JW cult world it is nothing less than an offensive prejudiced term to describe someone that allows people to act in a cruel, unnatural way towards a fellow human being.
'Sour grapes' is a convenient ad hominen attack that allows people to dismiss what he says without a second thought.
You have no right to slander this man without knowing the full story.
How about listening in to the call? You may just learn something if you take your blinkers off.........