The monsters that did this should be locked away for a long time and have the "sex abuser" brand to carry the rest of their lives,at the very least.
However,I believe the victim or his family have the moral right although not the legal right to hand out their own punishment if they prefer.I couldn't convict them in a court of law for handing out their own justice.
I am going to have to go back and read this story more closely. I thought it said it was a hazing and that all participates took part voluntarily.