Rogoff has a pretty long history of publishing what well-heeled people apparently want to hear, it's amazing that he was able to hide behind the "this was just a spreadsheet error" point.

The problem is I've mostly observed his chameleon act in radio interviews pre and post crisis. The pre-crisis interview, he claimed their was no problem and the post-crisis interview, he talked about how angry he was against the folks who claimed there was no problem, so unfortunately I can't provide a link (the files probably wouldn't be online anymore even if I took the trouble to find the link - smart shills do things by voice, it seems).