I spoke to a few of the passengers who were on that flight. Very interestingly, one passenger told me he was interviewed by one of the airport police. He showed me the cops business card. The cop asked him (through an interpreter), "Do you think the crew should be punished?".
Bear in mind this was only hours after the incident. The passenger said he was flabbergasted and could not even understand why he was being asked this question. He said the crew had done everything in their power to help the passengers even to the extent of protecting passengers from media in the terminal.
Cover your ass in japan.