And don't say, "I haven't accepted the job." a week ago and be in negotiations. Either don't comment or be honest about the issues (you don't have to say who or how bad) that are pushing possible changes.
Exactly. He could have said, "An erroneous report has circulated that I have accepted this position. Due to a private family matter, I am currently discussing the opening with both Pitt and Oregon State to come to the best decision possible for all parties."
Simple.