How much was discussed in outside channels that led to the conversation starting this way:
Mazreth asks, "Though I suppose you already know?"
You nod understandingly.
You say, "I have a suspicious."
You say, "Err."
Mazreth says, "If not we can go over it."
You say, "Suspicion."
You say, "I would very much like to go over it."
Mazreth says, "Sure."
You say, "However."
You say, "I know your time is valuable."
Mazreth says, "So you are here to be issued an official warning for Game Mechanics Abuse bsed upon exploitation of an enchanting bug."
Mazreth says, "That's as sussinct as I can make it."
You say, "Okay."
You say, "I understand and accept the punishment."
It really sounds like the warned players were given advanced notice that they were going to be "punished". Of course, if they knew what they were doing was wrong they knew it could catch up to them sooner or later.