I'm having difficulty grasping any point you are trying to make.
You say that Lutherine validly administers baptism. And that valid Baptism always cleanses the soul of Original Sin.
Are you claiming by admitting this we admit that there is salvation outside the Church?
Did you read my comment on how Baptism is a Catholic Sacrament and the efficaciousness of that Sacrament is dependent on the "work worked" not "the work of the worker", the minister is just an instrument, the formula is what makes the Sacrament efficacious unless the minister does not have the proper intent, but that is not a part of your question as you claim the sacrament is valid in this case and admit that all valid baptisms cleans the soul of Original Sin.
So can you be very specific in your objection or point so that it can be properly addressed. I'm probably missing something or reading into something here.