Yes, a tough call. And Cortese would have been damned if he did/damned if he didn't.
Appoint Pochettino straight away (as he did) and be called sneaky, sly, and guilty of stabbing our now ex manager in the back.
Leave it a few games and be criticised for leaving us high and dry with no replacement.
It really sucks trying to be dispassionate about this whole stinking business.