what info does mcmurphy recieve about his time in the ward that makes him change his attitude toward big nurse

"During the meeting, the patients tear into Harding’s sexual problems. Afterward, they are embarrassed, as always, at their viciousness. As a new participant and observer, McMurphy tells Harding that the meeting was a “pecking party”—the men acted like a bunch of chickens pecking at another chicken’s wound. He warns them that a pecking party can wipe out the whole flock. When McMurphy points out that Nurse Ratched pecks first, Harding becomes defensive and states that Ratched’s procedure is therapeutic. McMurphy replies that she is merely a “ball-cutter.” (1)