Where is anyone calling him a miracle worker? The bottom line is they put up 42 points in an elimination game and when the offense brought Pitt back within one score the defense failed to stop the Jags, IIRC this happened twice in the 4th quarter alone.
42 is good enough to win, if you want to call it deceptive fine.
I don't think there is any confusion on why Haley is leaving Pittsburgh.