Mel is somewhat error prone, but this is the right decision.

From the moment NP arrived, he aggressively asserted his authority by smashing up what we had.
He alienated players, and tried to change too much too soon, before he'd given anyone a chance.
It was apparent where this was heading ever since his early team selection featuring johnson, bent, blackman, butterfield etc, whilst hughes, martin and russell were benched.
His tactics were abysmal. He can hardly control his aggressive nature.
The moment mel questioned his behaviour there were bound to be fireworks.

Good riddance.
The best thing mel has done. Even if he is just clearing up his own mess.