I dont know enough to comment on the technical issues of the 757 ground sence system , but what we have here is the press not letting the truth get in the way of a good story and a bunch of so called professionals slagging a guy who was just doing his best to get the job done without putting anyone in danger.
I am lucky enough to hold an engineers licence and to command a jet airliner and from my point of view the captain did nothing wrong , infact he he should be congratulated for his persistance in trying to get the situation sorted out.
What is crystal clear is that some of the loudest voices posting above dont have the first idea what it is like to be in command of an aircraft that has just "gone tech" and they know even less about the best way to resolve the situation.
To the captain I say "well done and I,m sorry that the press got hold of this ".
To his more viciferouse critics above all I can say is "I dont think that you have what it takes to do his job".