They would never prosecute the NSA, they don't want to lose those agreements.
The NSA spying on Merkel is a diplomatic faux pas, but it changes nothing. The German people get angry, German politicians say a few huffy words, and no one doers anything. Because Germany is playing the same game the NSA is in every capacity with the BND.
You are a fool if you think it will ever be otherwise and you are bigger fool if you are German and you think it should be otherwise. The point of spying is to gather vital intelligence. Every nation does it. Every nation always will. What kind of airhead thinks it will ever be otherwise or should be otherwise? To respect people's private information? Am I supposed to laugh?
Does anyone think a few idealistic naive bloggers is ever going to change the nature of espionage? Are there really people out there who think espionage can ever be respectful or honest or straightforward?
I agree they should not prosecute the bloggers, but exactly what the hell were these bloggers thinking? They were going to shut down or change the nature of spying? Make it respectful and transparent? What kind of quixotic cluelessness about reality is this?