Interesting that in Belgium there does not appear to be any published caveat for flying over congested areas, other than at a minimum of 1000 ft above the highest obstacle. Whereas, in The Netherlands they also say you should be able to carry out a forced landing without undue hazard to persons or property on the ground - i.e. fly higher than 1000 ft if necessary to allow gliding clear of built up areas. So, this guy could have been meeting the letter of the law, whilst (possibly) not showing great airmanship!