It's fact, simple as that, Mancini very very very clearly stated that Tevez refused to play, to COME ON THE PITCH, nothing else. He was fined, eventually for failing to warm up and Platt, tv evidence, Tevez, has said he had already warmed up once.
I was thinking of a way to relate it to another career as so many people are of this utterly absurd position that he's only a player and HAS to do what a manager says which is laughable.
Imagine your boss at work asks for a coffee, you get it for him, he arbitrarily throws it in the bin and demands another one, are you being treated unfairly or not?
I would not in any way expect a boss to do that, what I might expect is a reasonable boss to ask where his coffee is and I remind him that I left it in his office or something, to which he'd be fine. IE Mancini should have realised Tevez was warmed up, which is the response Tevez gave, and then say ok get ready to go on.
What actually happened was the boss was mid argument(when very few people are totally rational, and that is understandable) with one player, he told Tevez to warm up, he wasn't in the mood to hear that Tevez was ready to go on, blew up and then later on lied about it to cover up his ridiculous behaviour.
Again the same situation is, if my boss is having a screaming argument with another employee, I'd likely avoid him for the moment and bring him a coffee later.
Mancini acted unreasonably, the suggestion that Tevez, ready to come on the pitch, and Mancini asking him to warm up...... so he's ready to come on the pitch, that Tevez should have warmed up again is just stupid. if you're ready, you're ready, that is what Mancini was ultimately asking of him. Mancini over reacted, Mancini lied after the game, their investigation did not in any way back up Mancini's original claims, no one heard Tevez refuse to come on the pitch, because he didn't and no one is actually claiming that now. Look around stories and its all now "refused to warm up" and few bother mentioning "because he had already warmed up".
Everything up to the point Mancini lied about what Tevez did was not unreasonable, people have bad days at the office, shout and react badly. Later on, he lied in a calculated way about a player....... and Tevez is the one supposedly in the wrong, its completely laughable both, how easily people jumped on the "lets hate Tevez" bandwagon, and how after City's investigation completely failed to substantiate any of Mancini's claims, people still blame Tevez and not the only man who was guilty of ANY wrong doing, or lying and behaving pretty much unlike any other professional manager during a huge game..... Mancini.
Tevez was one of three players he had an argument with that game, and Tevez didn't shout back, he was calm, said very little and didn't react. Dzeko yelled back quite a bit and Zabeleta looked far more agitated than Tevez on the bench.
But hey, thats only what happened, not what the mob mentality wants to have happened.