This is how I see the basic physics:
Once you are on the ground, back stick produces a couple about the main gear and downforce on the tailplane which adds to the weight on the main gear.
Of course back stick produces a subtraction of downforce at the nosewheel, but that is more than countered by the couple and downforce produced by braking at the main gear. Reverse from engines below the wing will also produce another couple about the main gear that adds downforce to the nose gear.
So back stick, once reverse and braking are applied, has to work against considerable forces that are not present in the air before the nosewheel will come up. Until the nosewheel starts coming up, the AOA remains constant.
The physics behind Belgique's suggestion of back stick during braking looks perfectly sound to me.
What I do not so far see is any manufacturer data on its effects and limitations which can then be passed on to the crews.