This scanner transponder stuff is a false indication. 1650' should tell you something!
Except for the probable position that Bye offered, the altitude, speed and heading would be consistent with a vector that would line up the aircraft to intercept the ILS. Schiphol vectors at 2000' QNH. And Bye has indicated that this was not the last mode-S recording.
False indication... probably not. Rubbish... probably not. Just irrelevant.
On the other hand, it confirms that there was probably nothing wrong with the aircrafts approach path until very late on final approach. Even the last mode-S recording seems completely normal.
On a related note - we know from these mode-s returns that the aircraft did 149 knots at 1050 feet (actually FL10.5, so 1500 feet on the QNH). Would it even be possible to bleed off so much speed in such a short period of time, so that the aircraft would be at stall speed 1000 feet lower, while maintaining the GS?
the reason there is no data down to the deck is due to the delay.
The reason no data down to the deck is available, with mode-S is selective interrogation. Such a transponder only transponds when prompted, either by radar or TCAS. But there's no deliberate delay built into mode-S or the scanners that receive them.