How is our diclaimer crap? We said it's a "guest column" and his opinion only. That's pretty darn straightforward.
If you aren't smart enough to figure out what that means, then that's a you problem not a me problem. Plus the guy never said he was cheating. He just said he had some questions.
You are publishing the story. This isn’t your open platform, it’s your guest writer and you published it, not him. You can’t knowingly or negligently publish defamatory material written by someone else on your behalf. Your guest writer is your writer. But, fill your boots. You feel confortable with it, that’s great. Doesn’t read like opinion to me, it reads like false facts. You’re lawyers are braver than me, I’m way too risk adverse.