The statements appear to have been coordinated, to some extent, as the Lieberman staffer said Lieberman's office was aware of Reid's statement before it was put out.
Here's what Reid said, in a statement released by his office this afternoon: "Senator Lieberman and I have a very open and honest working relationship. On issues ranging from foreign policy to health care, even when we disagree, he has always been straight forward [sic] with me."
Shortly thereafter, Lieberman released this statement through his office, responding to Reid's: "I appreciate Senator Reid's statement in response to the comments attributed to him in the New York Times Magazine. As Senator Reid indicated in his statement, he believes, as do I, that we have always been honest with each other and any suggestion otherwise is simply false and contrary to the truth."