I have been in locker rooms as an athlete. If what is being reported was happening, someone on that team (someone with a "strong" character) should have put an end to it. Not all locker rooms are made up of !@#$s.
What I suppose I am taking issue with is the comments that JM was a kitty or weak. I have read that on various sites. Perhaps the easiest thing for him to have done would have been to go with the flow. In a sense, he perhaps chose the option that required the most bravery. Although I anticipate that some will disagree, it has got to be hard to walk away and then attempt to change the culture of the team when no one was jumping up and down defending him - not players, not the coaching staff, and not the team.