Your last sentence sums up what I am trying to say.
If the players chose to ‘down tools’ due to him blaming them for the fiasco at QPR when I suspect they don’t hold him in especially high regard anyway, then a run of defeats will see him gone and the players get another chance with someone else.
It happens all the time (Mourinho, Ranieri, Pellegrini etc although I’m not putting Harris in that bracket of course!)