When you confront Thought Taker, the creature admits its hunger, but gives an oath that it will touch no member of the crew. It shows no remorse or embarrasment about disposing of the kobold's corpse. The only reason it dumped the remains in private was to spare the feelings of the crew, who apparently have different attitudes toward the care and feeding of food.
You start keeping double watches, and another problem makes itself apparent. The crew has also noticed the mind flayer's behavior, and it is having a serious effect on their morale. At first they talk about in private, but several of them approach you three days after you speak with Thought Taker.
"Banish the mind flayer from the ship immediately," suggests a large, robust man named Tinker.
"Anything with tentacles wouldn't think twice about breaking an oath," adds Jella, a thin, wiry woman.
"You're our only protection against him," concludes Robers, a bald dwarf. "If you don't do something soon, someone might have an accident."