"Thales, return," he says in an angry voice. "I'll deal with you later."
The new murderer climbs out of the enclosure. "Leader Leia! Wait! I-I'm sorry!" he says, sounding perhaps slightly less torn up than he should. "It was an accident!"
Of course it wasn't an accident. The whole time Pitch had been thinking Kill, kill, kill. While outwardly he had said not to, that didn't change the fact that that was what he had wanted. This was risky. He only needed to win. Killing the Cubchoo was a mistake. He needed to get out of here....
But running would be suspicious. A semblance of a plan formed in his head, Pitch sits down, putting his head in his hands. His body shakes in what may be sobbing, but if somebody were to get close enough they'd hear a low chuckle, barely audible, escaping from the trainer's mouth.