Although a different aircraft, the leaked Adam Air loss of control CVR can give us some idea of how fast a Jet upset will take. Do not listen to this tape unless you have a strong stomach. It very sobering. It's authenticity is disputed, however, it matches exactly the accident sequence discussed on the Adam Air thread at pprune. Start it about 2/3 through. The cricket sound on Boeing is the overspeed Mach warning (crowding supersonic.) The key event is the audible "bank angle" heard over the cockpit speakers. This would be an excessive bank over thirty degrees at high altitude. From that warning, and the subsequent overbank and dive, it takes 50 seconds before the airframe fails with a small crackle followed by a loud thump (likely main wing spar failure). Then 20 secs of disintegration. The increased wind noise (louder than barberpole) in the background is something I've never heard before in a jet. And never want to.
YouTube - Takbir Pilot Adam Air
The reason for posting the link, is so you can have some kind of idea just how dangerous it is to loose either flight controls or flight instruments at night. Also you can see why a lot of us suspect a dive followed by a break up at mid-altitude before sea level.
CC