The Jambos find themselves languising in 8th position in the SPL after Saturday's 3-1 defeat at Kilmarnock.
Korobochka let rip in the dressing room at full time and left the players in no doubt that their performance was unacceptable.
Midfielder Michael Stewart added "After the first 20 minutes one or two individuals in our team managed to maintain their performance, but the rest of us, myself included, are extremely disappointed with how the game panned out"
"The performance definitely wasn't good enough"