Dear Mr. Angry:
Many of us here can certainly sympathesize most sincerely with your feelings and frustration. You might find a good example of the WT religion's position on this kind of thing revealed in a post on SilentLamb's website. http://www.silentlambs.org
On that site you will find the confession of a former JW elder who tells about one man in his former congregation who confessed to have committed murders prior to becoming a Witness. The elder inquired from others and the Society whether he should report this knowledge to the authorities. They said no.
In all likelihood, the elders in your stepfather's congregation would regard anything you tell them as "gossip" and would do nothing whatsoever about it.