The clues to [Rove's] testimony are in the always cryptic remarks of sources familiar with Rove's testimony, i.e. from Rove himself or from someone on his legal defense team, which is the most likely source in my mind.
From the WaPo:The grand jury investigating the CIA leak case pressed White House senior adviser Karl Rove yesterday to more fully explain his conversations with reporters about CIA operative Valerie Plame, including discrepancies between his testimony and the account provided by a key witness in the investigation, according to a source familiar with Rove's account.
The "source" went on to say that the grand jury itself was very interested in discrepencies in testimony. And regarding the "missing e-mail" and how it "refreshed" Rove's recollection of his talk with Cooper -- conveniently in my mind right before Rove had to testify again in this matter. (ooooh, what I wouldn't give to know whether Fitz or Rove found that e-mail or information about it first.)
Clearly Carol Leonnig and Jim VandeHei of the WaPo are thinking that something bigger than just an after-investigation report is coming down the pike. They've named Libby and Rove outright as potential indictments and added the "other administration officials" possibility as a kicker. Rove didn't go back to the White House after testimony -- maybe he needed a shower. Or maybe he went up to Camp David to meet with the Preznit, deciding to drive his Jag instead of taking the 'copter.
The whole piece is worth reading if you're curious.