Yeah, interesting point and I think broadly speaking you might well be right. There was also this Telegraph story:
http://www.telegraph.co.uk/sport/fo...ger-Andre-Villas-Boas-had-become-distant.html
That's the Telegraph not the Daily Star, so I suspect there are reasonable sources here, and it just has a ring of truth to it. Also, the fact this story was written the evening of AVB's sacking suggests the journalist had prior knowledge about difficulties behind the scenes. Those aren't anecdotes and relationship profiles you cobble together in a few hours.
If that's correct, then BE's theory that AVB probably could have stayed on if he'd fought harder for a final chance is probably correct. I think he'd probably just had enough. Whether that expressed itself as "my way or the highway" or something less confrontational, who knows, but one way or the other I think time was up whichever way you cut it.