Andrewr,
15 nose up and TOGA will work below 10000'. It will not work at FL380. Normal cruise attitude at .82 is around 2.5 degrees up. To increase this to 15 nose up, even with what power TOGA would give up there will never have a happy ending. The 330 has not got the performance to sustain even 10 nose up at an ALT near max or even optimum. To recover an upset at altitude you would need to lower to/or below normal cruise attitude to recover speed.
The big problem with this accident is that situational awareness was lost, and never regained. The unreliable airspeed recall is useful if this happens down low, but ain't gonna work if you use the same numbers up high. Luckily this has been learned from this accident and is being reenforced/taught by a lot of airlines now.
The Don