Thank you firstly for the post.
I have also noticed this sudden change in Trump, even before this staff shake-up. He gave a speech earlier this week, and it was one of the rare, if not only times I saw him reading from the teleprompt similar to the left right one Obama uses so well.
My thoughts on this is they are setting him up to fail vs Hillary during the debates. He already made his business deal a long time ago. He's a businessman, he makes money. Do you think he is in it to win? He's there to make a quick buck. No dishonour in losing to the first woman president of the free world. Please.

However, quick spanner, what are the chances of the elections not even taking place, and Obama stays president well into the new year under a state of emergency war time act that allows for such act. Heck, he killed Osama, why not keep him in while nuking the Russians? The two candidates (who are most likely two win) are physically, emotionally, and mentally unfit). No establishment wants either of them in there. Have you seen Hillarys health? Good heavens, she isn't fit to run a kitchen tea let alone a government. Wow. And too many people hate Trump. He will replace all the people who are collecting bribes with new ones. They will never allow him to be president.

Just think about it.