So, you think Germany would pretend to be pissed off enough make moves against the US, instead of making their usual hollow threats that go nowhere?
Of course! The government will go as far (and only as far) as it takes to quell the dissatisfaction brewing among the people. If that goes as far as real action, that's what will happen.
IMO that would be a too strong a response for a country that heavily depends on export.
What is your point exactly? I'm not saying they will. I'm saying they would.