I would say two things. First if the management at Sony pushed him out the door it is about time and way overdue. His past statements have been the butt of many jokes, and they haven't endeared the company in the eyes of many. You guys defending him spent far too much time defending him and his antics. You miss him because you forced yourself to like him. Yet he caused Sony more grief in the last year than any corporate executive has a right to.
The second thing is if he did bolt on his own accord. Either seeing the ax coming down the hallway at him, or decided there were more verdant pastures. Living to fight another day is a good motto to have, but looking for greener pastures doesn't pan out after you have become a perceived leper. To put it plainly bolting because you have no choice is a smart move. Bolting because you think too highly of yourself is not.
You might gather I haven't been impressed by this guys antics over the past year. His chronic foot in mouth disease, and stupid bogus claims. With executives like that who needs enemies. Your staff can do a bang up job alienating the masses on their own.
I wouldn't say this is bad for Sony, but its also not a good sign. Too many high profile vacancies isn't a good thing. During the interim of replacement there will be a void, and it will be interpreted as silence. You want logical, sound, and honest noise that is true. No noise however costs consumer confidence. You still need to match the volume.