Banning circumcision seems like a pretty simple anti-foreigner measure.
I don't think this is what the judges at the court in Cologne had in mind when they made that ruling, though. They probably made that ruling in good faith but they lacked any kind of historical and religious sensitivity.
Yes, a circumcision is a (usually very minor) infringement on a boy's physical integrity, but since the effects of a ban of this practice are much worse and far-reaching than the "damage" of a circumcision these judges should never have ruled circumcisions illegal.
They intentions doesn't matter. This ruling is not only retarded, it's offensive. I'm offended by it's stupidity, although I don't live in Germany and I'm neither a Muslim or Jew.
