He technically did the cleaning. He screwed up because he didn't consider what the point of cleaning was (like you say, giving her wife a day off) and he just did something that he thought was approximately equivalent to what she literally asked.
I call that "not really caring". If he cared, he would have realized he should have cleaned the day before and given "a clean bathroom on Mother's Day" as a present instead of "the act of cleaning the bathroom on Mother's Day".