Well I think the Eurocontrol image speaks for itself, what excuses do they need if their own tests show no problems at all on the aircraft performance, their airspace and (the UK's) is clear on the Eurocontrol charts, and they will just revise their mainteinance schedule in future to keep an close eye on any long term damage to their aircraft.
Is NATS where authorised by someone ( nobody really know who is in charge here...) to use the same chart as the Eurocontrol use, the UK airspace would be open right now. It is a matter of politics now. Eventually Mr Brown will do something about it (2 days late) and be hail as a hero....