"Apologize to who? For WHAT?"
"I'm not apologizing for refusing to trash your house."
"And I don't think I could fight QUIETLY in this hallway either."

Garrot has no intention of backing down from being in the right here, but he also has a sneaking suspicion he did something offensive without realizing it. That's par for the course with him normally, but with the monsters and their weirdness? Almost guaranteed.