His fear of you had turned into mild annoyance. He did make you after all, even if you were made of his hate, all his negativity bottled into one, but to him, you were just... Annoying! He didn't know if it was just after the rounds of having to deal with you that he became numb to your demeanor, or if he never truly feared you in the first place. Either way, this annoyance had quickly built up.
And, during the current round, he snapped. And by snapped, I mean scolding you like you were some child. He was crossing his arms, glaring at you.
Shedletsky: "You're acting like a child, you know that?"
His sudden bluntness, and insult, almost made you pause, but you quickly attempted to try to stab him again, which he quickly blocked with his own sword.
Shedletsky: "Can't you listen to me just for a goddamn second? I'm basically your creator! Doesn't that mean you should respect me?!"