As her neighbor he might potentially be a witness. He surely must have known that Plame was not covert. There was a potential conflict of interest.
No, actually I remember this guy, Wolf, being on TV back when the Plame "scandal" was still hot with the media.
He's a typical pencil-necked geek Dim lawyer.
Wolf is one of a couple of Plame/Wilson neighbors who "came forward" to Fitzgerald to proclaim they had "no idea" Plame worked for the CIA.
I was very skeptical of Wolf's claim then, and I still am now.