After a French court agreed to Jeremy Forrest's extradition to the UK, his lawyer, Daniel Lalanne, said:
"The decision was as expected. Jeremy Forrest will be handed over to the British authorities with his agreement".
Mr Lalanne said he had no say in the logistics of his return but that it would happen "quickly".
"I cannot be more specific than that," he said.
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Guillier conceded a "severe defeat" defeat to his supporters as the result came in.
The outage struck Hartfield-Jackson Atlanta International Airport at around 1pm local time, stopping all outgoing flights.
It will be a chilly day for many parts with the highest temperatures, about 10 Celsius (50F) in the far northwest.