It didn't even take him more than ten seconds to open his eyes, already frightened for the incoming horror. He should expect this when he absorbed curses from other vampires. It wasn't done before but he can't bare it anymore to see more hybrids will be hurt.
The death of the hybrids in that town still haunt him every time and he can't add more faces on his mind and make him go insane.
He decided that if the professor won't wake up sooner, he would put an end to Celeste and her ruling in the academy. He would do so without mercy. If the king was ever involved, he won't hesitate to rid of him as well.
Instead of resting in bed, he decided to get out his tower after he instructed for his guards there to put up a front that he was inside and recovering from the pain of absorbing the curses from the hybrids. Such set up was meant for Celeste who without a doubt would be looking for him.