In reference to SG........a player can lose his form, even for an extended period...and it often happens with the captain.
Instead of throwing him out of the team, in collusion with a stupid Chairman of selectors, and others..................the coach should have rehabilitated the player............just as Gary Kirsten did with Rahul Dravid.
But then the 'coach' was not really a coach. He was an ex-player masquerading as a coach and hence he blundered along...till he ultimately got the royal boot.
He falsely sold an utopian dream, where older players, particularly those who can talk up to him, are automatically redundant.
And then he conjured up a regimen of drums, boxes and tables for cricketers...in search of 'talent for tomorrow'...........with himself being the 'ring-master'.

I hope, back home he doesn't start 'coaching' his grandson...the poor lad may miss out on whatever he may achieve.