On the other hand, I've yet to see any of the punished folks respond to the spoilers since March fact that has been stated by WotC. It's a lot harder to claim 'I thought they were fakes' when there had been previous spoilers leaked to your chat group beforehand.
From assorted cjshrader posts on reddit:
"I know at least one of them never saw any spoiled cards, fake or otherwise, in the chat. A "thorough investigation" probably should have discovered that. They were IN the chat, yeah, but almost never checked in."
"It's a Facebook chat for coordinating the SE region, you don't generally kick people out. We didn't realize it was our responsibility to police WotC's IP, and, in most instances, leaks never went beyond our chat. They only got out once.
My only point here is that wording is intentionally vague as to make it sound like they can pin every leak over the past year on us. That isn't true."
"Yeah, most of us didn't every circulate a leak, and we're suspended just the same. Also only one leak came from our chat despite the vague wording to the contrary."
"No, we discussed all kinds of spoilers in the chat. Some were real, some weren't. Kozilek and Wastes was the first time it was real and apparently leaked out of our chat though."
"We're staying a little close-lipped right now despite WotC giving us no chance to defend ourselves and saying all these things about us, but rest assured I have never spread the leak of a Magic card. This line has made me...miffed."
"Yep, all I'm saying is it sounds like we're accused of more than one leak (as in, a card going public before it should). That simply isn't true.
To touch on your earlier point, this FB chat generates approximately 1000 messages a day. We are vocal. Quite a few people in the chat don't log in daily, or even weekly, and just pop their heads in from time to time to say hello. They don't read all the old messages, and any time we discuss a spoiler (Whether it's from imgur or Facebook or through a friend or wherever) that's merely a small portion of one day's discussion. It is entirely reasonable that a person could miss every spoiler we discuss. And I know for a fact this is true of at least one person, but I suspect more than one."
"I can actually guarantee that 4 people never saw Kozilek and Wastes while in the group, though I can't prove that anymore with the way that FB chats work."
If you want the context of all those statements, search his username on reddit. I just thought it was worth showing you that yes, they have acknowledged it. Most of the affected judges haven't made any kind of public statement at all. CJ is an outlier in that he has interfaced with reddit a little bit.