This looks like another case of flying over a built up area without thinking it through.
In this case it could very well be a bit premature to jump to such conclusions.
The aircraft was approaching to land at Aschaffenburg-Grossostheim. The circuit is to the north of the airfield, with entry on the downwind leg from the north. Frankfurt Airspace C is on top, starting at 3500 ft MSL. Have a look at it all at Google Maps, and you'll see that there were not many options.