^ ^ ^ Hiddink is a different case. Scolari needed to be moved out because after the first few months, his tactics were being easily countered by opposing teams and we were regressing under him. Grant was a dead man walking from the day he took over. Even if he had won the CL, he would have been sacked. It was utter idiocy on Kenyon's part to give him a long-term contract in the first place. Mourinho - well, once you fall out with the owner there's no coming back.
Taking these into account, it was wise of the club to appoint an interim manager to salvage something from the season. And they need to make a better appointment in the summer.