Right.
But, more vertical component means also much less duration (a faster rate of descent). You can't have both. Now, we are facing the opposite: a very long duration (the longuest ever recorded if LOC occured so early) but a very short distance from departure point. This will translate into a lot of horizontal component but in a very tiny airspace. Those figures should be somewhat in the range of what is already known or something very new happened... or is just wrong with the basic assumption.
Good Point Olivier
The reason for a very long LOC event is fairly obvious, the Airbus FBW system was still in control. But how was the airspeed lost so quickly? Logically the aircraft departed controlled flight with a strong upward vector.
Now if someone can match up these endpoints, we will likely come very close to the cause of the loss of AF447 without even using the recorder data.
Looks like great minds think alike.
Grity is right on target.