Roger that, just wondering if anybody had worked it all out.
Here's part of the law that might be a problem:
knowing that the information disclosed so identifies such covert agent and that the United States is taking affirmative measures to conceal such covert agent's intelligence relationship to the United States
If Rove can plausibly deny that he knew about "affirmative measures..." then he could get off.
Even if they don't get him on this one, there's probably enough there to justify a crapload of investigating and grand juries, etc, and as we saw with Bubba you can always find something on these weasels if you look hard enough.