Terribly bad news for the GSS pilots.
If it is any help, all of the US majors are hiring as is Atlas (for whom the 747-8 time would be a tremendous asset to your CV). I understand there would be a license conversion issue but the process of going from an EASA license to an FAA license is quite a bit easier than going the other way. Maybe these links would be of some help.
FAR Part 61 Sec. 61.153 effective as of 07/15/2013
Airmen Certification - Verify the Authenticity of a Foreign License, Rating, or Medical Certification
ATP Flight School: Airline Transport Pilot (ATP) Written & Certificate
In any case, good luck with the upset recovery. Hopefully the hiring surge will help in some way.
EW