Probably because Twitter's PR people probably reached out to him and told him he wasn't helping anything and needed to stop posting. I wouldn't be surprised if they walked to his office and unplugged his keyboard.
It was bad. He posted something that made him look like an idiot or a liar. I'm not saying he is either one of those, but the post he wrote makes almost no sense when compared to the e-mail presented in the post. It is like he didn't even read it. If he was trying to say that they never sent that e-mail, then that point wasn't clear. I'm sure he had the best of intentions but it really blew up in his face.
It was bad. He posted something that made him look like an idiot or a liar. I'm not saying he is either one of those, but the post he wrote makes almost no sense when compared to the e-mail presented in the post. It is like he didn't even read it. If he was trying to say that they never sent that e-mail, then that point wasn't clear. I'm sure he had the best of intentions but it really blew up in his face.