pawn sacrifice to silence the german public
This whole story smells fishy.
Who is this double agent anyway? A handicaped low rank office worker. Probably someone who would easily volunteer in such a game to get his early retirement and a handfull of €.
We have a triple-win situation on both sides of the atlantic:
The german government can show that they are taking action and fight domestic spying.
Government officials in germany are allready demanig a fund raise for countermeasures to protect the german public from foreign agencies. Data retention law will be getting on its way again.
The US will benefit from the improved german spying infrastructure.