Some positives
While everyone is baying for the pilots' heads, I'd like to point out some positives - the actions of a modern 'uncommanded' aircraft in our modern airspace.
a) Flight fuelling guidelines meant this plane had plenty of fuel for the 'excursion'
b) Airbus technology meant the aircraft maintained altitude and direction
c) ATC no doubt kept other aircraft clear
Result - no fatalities, no injuries. Clearly some major questions to be answered, but the 'safety envelope' helped recover the situation, and I think this should be acknowledged.