Tesla has not disputed (1), the claim that Broder reached out to Tesla during the journey (That would be the first thing I would point out if I were Musk and if Broder did not call during the journey)
While musk has cast doubt on the entire storyline, there's a very simple way to resolve the doubt. And if you read what I wrote, it's sitting in the penultimate part of the post you are responding to (reproduced below):
"The only way to attack the integrity of Broder is to argue that somehow he wasn't advised to do something. Guess what: there are call logs, and those should be brought out. It's a he-said-she-said right now and everyone sides with the car CEO rather than the journalist. That's all fine, but in this case Tesla has a way of definitively proving that Broder was being malicious: If the call logs clearly show that Broder wasn't acting in accordance to what he claims was Tesla's judgments, then Broder deserves all the criticism. Otherwise it is Tesla's fault."
Musk was completely out of line in trying to assert something in a conversation he was not a part of. Right now the only first-hand source discussing the conversations is Broder, and I am not going to assume that he is telling the truth or lying until Tesla reveals the call logs. Assuming that musk, notably not a party to the phone conversations, is telling the truth seems foolish. Let's all hear the phone conversations and then judge.