While I am all in for some recreational Germans bashing, this is not true. They went all in and lost, there was no plan B.

The original and primary goal of the Montan Union (predecessor of the European Community which is the predecessor of European Union) was to keep the Fritzes under close watch of their neighbours after the war (especially France wanted to have a close look) by common control over the (war-)important resources like steel, coal etc.
The idea came from France, Germany agreed immediately as it allowed them to regain some sovereignity. And most of the world agreed that helping them rebuild is a smarter thing than keeping them down for ages (like after WWI, which was what brought Hitler and the NSDAP to power finally).

It is however IMO true, that today they're calling the shots in the EU and the EURO could be seen as their trojan horse to transfer wealth into their direction.