Why didn't they do the RNAV(GPS)28L approach (as we did a couple of weeks ago in a b772), disengage the A/P at DA then hand fly the darn thing to the r/way like they do at every CAT 1 ILS they probably do everywhere else in nice wx, and still have A/T back up.
Perhaps the chief pilot at the airline is going to ask them that when they get home.