Storms on Baptism and Unity

Sam Storms has weighed in on the baptism issue, and asks how 'together for the gospel' we really are (ensuring he will never teach at Southern Seminary):

My question, then, is this: How can we claim to be "together" or "united" for the sake of the gospel and turn away a brother or sister from the very expression and proclamation of that gospel that is so central to the life and testimony of the church?