So why wouldn't they, repair some wire bundles, repair some damaged components, bolt on a few new engines, put in some temporary structural repairs in the wing and ferry the thing back to Airbus for full repair?
It isn't like it the airframe is broken in little pieces or burnt up.
It flew into Singapore-why shouldn't it fly out?
I've ferried damaged aircraft-no big deal except you might have some additional flight restrictions/procedures.