Above 150ft the airplane was not in alpha prot.
Below 150ft it was.
And additionally passing 50ft it was not anymore.
This cannot be true because once it is activated, to deactivate: (from FCOM)
1. The pilot must push the stick greater than 8 degrees forward or
greater than .5 degrees for at least for .5 seconds when alpha is less than alpha max.
2. In addition below 200ft, the angle of attack protection is also deactivated when,
-the side stick deflection is less than half nose up and
-actual alpha is less than alpha prot-2 degrees.
When Sully was pulling full back stick to get flare how can he be out of alpha prot?