Don;t think it was a silly claim. NRO had a statement from Rove's lawyer:
"The Special Counsel has advised Mr. Rove that he has made no decision about whether or not to bring charges and that Mr. Rove’s status has not changed. Mr. Rove will continue to cooperate fully with the Special Counsel’s efforts to complete the investigation. We are confident that when the Special Counsel finishes his work, he will conclude that Mr. Rove has done nothing wrong."
http://corner.nationalreview.com/
And Reuters reports that Rove himself claimed he will not be indicted.