My theory is that Cooper, Mandy Grunwald's husband and a rabid Democrat, may have tried to illegally contend that Karl Rove was his source and does not want to perjure himself before the Grand Jury. This makes sense then that the MSNBC O'Donnell operative would claim it was Rove in Cooper's notes, but Cooper is trying to avoid testifying since they have the notes. The notes could be a lie and attempt to frame Rove. If the SP knows this, Cooper (and Miller) are in a world of hurt ...
Didn't O'Donnell have a "melt-down" in 2004 when he was on a show with one of the SBVFT..he went postal, IIRC..
You are EXACTLY correct.
Miller must testify. The "turned over notes" are a red herring - - completely useless.