absolutely horrific. Also unbelievable yet strangely reassuring that no one on board knew what was coming until it was literally a second away.
The pilot Pierre-Cedric Bonin seems to be just about completely at fault though, and did everything exactly wrong. Had he relinquished the controls to seemingly anyone else or spoken up about what he was doing, it probably could have been avoided. But unfortunately everyone first had to figure out what was happening, then what he'd been doing, then solve them both, by which point it was too late.
I remember actually that I flew on the same type of aircraft to Paris about 4 days after this crash. Back when they still hadn't found the plane, and didn't have the slightest clue as to what brought it down. Bit of a nervy affair for a somewhat nervous flier like myself...