Don't know much about Mayer, but found it interesting that he deleted the post honoring Steve Jobs after SJ's biography came out and he was quoted as saying that Mayer was "out of control".
He has a habit of deleting almost all of the posts on his tumblr. When he started the account, he actually said he was only going to have one or two posts up at any one time. It's kind of surprising the number he's got up now (although they're almost all photos). The Jobs tribute post could have been deleted out of spite, but he's deleted some other really cool stuff too, so I kinda doubt it.