Well Dick.. I fly the 75/76.. If we have LAND 2 annunciated nose up trim will be applied at 330 RA on the 757 and 767-200 and 100 RA on the 767-300.. We can fly a cat IIIA approach with only LAND 2 annunciated and it is definately not recommended to disengage the A/P after the noseup trim has been applied..
From the book "During a LAND2 multi A/P approach and below 330 ft RA an increment of nose up trim is automatically applied for flare. If the A/Ps are subsequently disengaged in the approach, a forward control column force of 20-30 lbs may be required to counter the automatic trim condition. If an automatic multi A/P GA is performed, the increment of automatic trim is removed."