Do you REALLY think a subordinate of his would pull something like that without letting Mr. Vesuvius Temper know????
Yes, it was meant as a dumbass childish prank, by mental teenagers drunk on government power. There are thousands of little pissant government workers across the country who flex their little tyrant muscles for their own enjoyment. The closed three of 12 toll lanes because the could and they thought it would be funny.
If there is evidence that Christie had foreknowledge, where is it? All I ever hear from lefties is "of course he knew!" or "you know he knew!" or "how could he not know!".
Without proof of foreknowledge on his part, your position that you "just know he knew" is emotion-based.