That sounds a little rough for the offense. It does sound like you were being made an example.

I've had many interviews and have never once been asked for my OPRs or Form 8s. I can't tell you what each airline does in it's process, but I doubt you have much to worry about. I also think you've taken a very mature attitude about your mistake and your response is exactly what an interviewer is looking for. Take responsibility, learn from your mistake and move on.

I think you have very little to worry about.