Personally, I think Elon Musk wants out of Tesla. The things he did lately, all point to this conclusion. Maybe he lost vision or interest in the company, but leaving from his own will would jeopardize the future of the company, since most of Tesla's backers are fans of him. Arranging himself an exit in this way, would make it look as he's the victim left with no choice but leave.
...which would be very convenient if he believed there was no way to meet the company's targets and fix its problems, thus being bound to failure.
...which, coincidentally, is what short sellers also believe and have been warning about for ages.
Thus the "I was forced to leave" spin would be an effective excuse to avoid the blowback and the stigma of failing to perform and deliver on his promises that the company was viable while it wasn't.