OttoL
Although the A380 is a bloody big jet, it , like other Airbus types, doesn't like to "Go Down" and "Slow Down" at the same time! So instructions from ATC like "Descend to 4000, reduce speed to 210kts" when you are maintaining 7000ft and 250kts will normally require speed brakes(spoilers) to achieve the aim in any reasonable amount of time. That's what you can see in the photo : looks like descending into Dubai from the South