I'm not quite sure what was uncertified here. The crew was flying an approach with an autopilot and the autothrottle engaged. If things had gone properly, I am sure that the pilot would have disconnected the autopilot at some point and finished the landing. That would be quite normal and certainly legal.
I am not sure what some of the people here are talking about with a single autopilot autoland. On the Classic B747, the rad alt would trip the autopilot off at 150ft. RA. On the -400s, the autopilot can fly the aircraft down to 5ft. RA before it trips off. If left alone, I am quite sure the aircraft would fly itself into the ground but surely you can't call this autoland.
It also has to be remembered that the logic on the aircraft has to cover many other possible conditions, not just the setup they had that day. Personally, I think if anyone was to study the systems thoroughly, they would be quite satisfied with the design in place.