Dear crashresident,
indeed, the picture of the engine (dallasnews) tend to confirm that the engine was rotating. Looking to the other picture nufoto.nl | Negen doden bij vliegtuigcrash Schiphol (seconds after impact) it looks like the engine was rotating at this point, delivering a "steady" flow (5 to 10 m at the rear of engine, constant height of dust).
Could you please describe in detail (you are not the eyewitness Jeroen J. are you?) (at first without interpreting it), what you hear before the crash, after the crash? Thanks!