From what thre Russians are saying in Chronus post, it really looks that they were still on the autopilot at 3000 feet, as the trim automatically nosed down abruptly to catch the altitude. As I said in previous posts, they indicated to tower that they want to level out at level 80 and probably forgot altitude select at 900m, which is 3000 feet. Than came the surprise of violent level out, as the power was still quite high. As the autopilot had no other choice than to pitch violently down, to keep altitude, it has probably overdone a parameter in pitch and automatically disconnected itself with quite a pitch down. And "told" the pilots: "you have control". Airbus can do this trick on pilots too. And it ended up fatel even with testpilots on board. Not sure if I can find the actual accident report, but I remember we talked about this as airbus guys around 2008. We even trained how not to do a "high energy goaround"