Globe and mail reporting that counsel for one group of players admitting that the event did occur but was consensual, another group that was in the room, left without taking part.
Presuming things happened as she said, it's pretty easy to infer that the second group had the moral judgement to at least be uncomfortable with what was happening, but not the courage to stop it. Step up now boys.
That might be reading into it a bit much. Not everyone is into a gang bang. Assuming this was consensual (which we obviously can't assume) it wouldn't be surprising to find a handful of guys were not interested in sharing a single woman with a bunch of other guys.
Even if it went as she said, the second group might not have stayed around long enough to witness what was really happening from a consent point of view.