I think it was just impossible to predict what Morgan would do - in the past year and a bit he'd chosen Curbishley as #1 candidate on the basis of nothing only to get blown out, more or less decided to take Bruce then caved, went running to Grandad Walter Smith, left TC in charge, appointed Solbakken with a grand new vision and given up inside six months, gave Saunders the job with no interview...you couldn't second guess what would happen.
All things being equal then of course he had to go, he did an abysmal job. I could genuinely pick you 1,000 managers who would not have relegated that squad from that position (none of them would have been such cunts or constantly talked such utter rot either).
If he had fluked survival then he would have stayed and we would have ended up with a loathsome squad (I would also not be attending games until he went).