Good post 1491 (Basil) interesting in that the upper air handling is a challenge. BEA say trim was 29% usually that would be 38% I.e more aft.. That may be because of the AF configuration.. (note the cofg moves aft in flight due fuel transfer to tail) which makes the a/c even more sensitive in pitch.
I agree IMHO a very very difficult situation when one takes surprise/shock into account.