It is safe to say that most of the comments above demonstrate that the authors have no clue what they are talking about.
There is interesting reading in Boeings' AERO magazines.
(Try 'search' for overweight landing and also for conditional maintenance inspection procedures.)
It was a line training flight with a new F/O on his first flight on a 747.
The Cpt/Line trainer himself intervened during the landing, took control of the a/c and produced the 3.14g landing. A techlog entry was done. However maintenance could not find evidence of damage on their first inspection.
Btw
Retarding throttles on a 744/748 at 10-5" is too late.
Cheers