nothing. you use the same restore routine you've been training for. 

 I'm guessing, but they might block USA IPs from accessing it 

 It's possible. I think that ended up happening with Wallet of Satoshi. I wonder if using the Tor connection in Phoenix would make that infeasible. 

 I'm doubtful that they do any blocking at the IP level. Current assumption is that installing from obtanium/APK should still work. Even so, I wouldn't risk a substantial amount of funds with trying it