Jon is subdued and raped by one of the avatars (I was picturing either Peter, Elias or Annabelle but feel free to get creative) in front of multiple members of the archives crew who are unable to do anything but watch. As an avatar of beholding, the knowledge that they're watching everything horrible that's happening to him arouses him just as much as it shames him, if not more.

+trans!Jon
++Lots of dirty talk poking at just how much Jon is getting off to his friends seeing him like this
+++The others trying not to watch, but they're all also marked by beholding and can't help but look