This may not be exactly related to your question (but then again, neither was 411A's post above
-- chill mate, just pulling your chain
)
But, in regards to your question:
all I wanted to know is it allowed to change runway at such short notice? ....
There's a standard approach at San Juan, Puerto Rico called the "Lagoon Visual", in which you fly a portion of the ILS to Runway 10 until short final, then make a left turn to line up with Runway 8. (This is due to more restrictive terrain conditions on the extended final of Runway 8.) The actual difference in alignment / heading change between the two runways is about 24 degrees, and by the time you complete the turn, you're only a short distance from touchdown. It can look especially sporty from a pax's perspective (especially those on the left side of the aircraft) because it's over water, which of course makes it more difficult to determine height from their side window view.
We often get questions/comments about that "sharp turn over the water just before touchdown" when in reality it's a very controlled, smooth, and extremely safe procedure.
Perhaps others with Schiphol-specific knowledge can say whether a similar approach is in place there?