Ding ding ding.
There is actually a bit of truth in this article if you read enough into it.
Grenier either:
(A) outed Plame and blew her cover to Libby, or,
(B) Plame wasn't a NOC and wasn't covert, which is why Grenier was forthcoming to Libby.
This is actually a plus for Libby, and Fitzy knows it. That's why he leaked this upcoming testimony.
All Libby's lawyers have to do is get them to admit that they've spoken to someone other than Libby about Wilson's trip or discredit them by proving they spoke to someone else if they claim they didn't. One will do!
Good catch. Although the NY Daily Spews spins this as a negative vis-a-vis Libby.