Some Lutheran denominations resulted from the desire to conduct services in English rather than German. That wasn't theology. In recent times, factions like the ELCA wanted to be more "I'm OK, you're OK" so that they could have female and most recently homo pastors. The Wisconsin and Missouri Synod churches are still pretty straight-laced Lutherans, adhering very closely with Luther's doctrine.
Some of us Lutherans are just real sorry that the ELCA imagines itself to be Lutheran.
I was talking more about the clergy issues than the language; both sides simply can’t be correct.