I'm very sceptical of the level of "abuse" being leveled at the fans and where it really sits in the scale of reasoning for him resigning.
I'm absolutely sure there will have been a small minority that take it way too far in their venting of criticism but you can't convince me this is some anomaly that everyone in football doesn't come across on the regular.
It very much smacks of a full blown ego driven temper tantrum in the "it's ma baw and you're no playing with it" style. No doubt he's probably fed up of the criticism being leveled at him, but let's be honest, the criticism is valid.
I've never been a big fan and other than a couple of purple patches he's been poor on several fronts. It might end up being a case of be careful what you wish for, but it also might not.