There is one other thing you need to account for.
Here's Gravy's post from early in this thread where he recounted the data recorded on the FDR at the moment of impact. Below is the relevant information describing how the aircraft was oriented:
11. Pitch angle - 40 deg down
12. Airspeed - 500 kts
13. Heading - 180 deg
14. Roll angle - 150 deg right
15. AoA - 20 deg negative
Notice that last one - AoA. AoA is Angle of Attack. It describes the angular difference between the direction the aircraft is moving and the direction the nose of the fuselage is pointing (technically, it's the difference angular difference between direction of airflow and the cross-section the wing, but using the fuselage as reference is close enough for the purposes of illustration).
Think of a commercial airliner when it's coming into land - notice how while the jet is moving forwards and descending its nose is pitched up. That's a great example of angle of attack. The higher the angle of attack, the more lift that is generated - up to a point. Beyond a certain AoA, the airflow over the wing is disrupted and lift is lost.
See
this web page which has a description of angle of attack along with some helpful illustrations.
From the FDR data, there was a 20° difference between the flight path and the direction the fuselage was pointing.