The frustrating thing with Gus is he's a decent and interesting guy most of the time and plays good football. But he has repeatedly acted an egotistical knob and/or got carried away with his own hype way too often. He always starts off well them the ego snowballs and it ends in self-centred...
This is why ultimately he's such a ****ing idiot. And if he did want to resign in a dramatic manner whilst ****ing the board over stay focused and then walk out giving it large after getting promoted. That's the way to do it.
I am sure he didn't deliberately set out to lose the Palace game. My take is he allowed himself to be distracted and therefore didn't give the game his full attention. But this is just as bad if you're a professional.