In referring to the Speigel article.
Hüttig is not without bias in that he provides technical assistance to the victim's families and thus probably has economic interests at play.
The description of the conditions inside the aircraft on the way down are a bit overblown. Although the nose did get pretty high in the air, the maneuvers suggest that cabin environment was close to 1 g. Probably more unsettling would have been the wing drops that the aircraft experienced. Not so bad as a roller coaster ride though.
Biggest fault with the Spiegel article is that the aircraft was "doomed" when the trim ran up to 13 degrees. If the crew had run it back down to near normal, this long thread would probably not exist and there would likely not exist a victim's family group.
There are a lot of training issues sticking out of this mess, and not all of them appear to have originated with AF.