I think the point is you do not close the only runway at an operational unit if you have a choice, instead hop somewhere else, in this instance it may not have been possible to hop anywhere else, as we are not aware of the facts, ie is it a simple case of operator error, or was there a system failure leaving the crew with no choice?
As for somewhere else to ditch it I guess Kemble can't be more than 5-10 mins from Brize?