I can hear the conspiracy theorists...
Cipel works for the Mossad, and they want Bush reelected, so this is part of a campaign to distract and deflate the Democrat Party, the effects of which will reflect poorly on Kerry's already lackluster performance.
Cipel was working for Charles Kushner, who hired him specifically so that Kushner would be able to blackmail McGreevey whenever he needed state approvals, assistance, etc. for any of his myriad of real estate interests.
Well, this was Jersey, home of Bruce Springstein, often speculated to be a Mossad double agent.
"Don't pull the mask off the ol' Lone Ranger
and you don't mess around with.... Karl Rove."
Hmmmm... along with Monica Lewinsky....
Sounds reasonable.