They can't ask Udall and Wyden in private about it?
Besides, I think they already knew where the "mistakes" were, otherwise they wouldn't have retracted them if they didn't think something was wrong with them themselves.
I don't think they are saying they don't know what the "mistakes" were - rather, that to reveal what they were would be to reveal classified information. And publishing a fixed version would reveal what the mistakes were.
Besides, I think they already knew where the "mistakes" were, otherwise they wouldn't have retracted them if they didn't think something was wrong with them themselves.