Warren Throckmorton at Patheos shares a document that Mars Hill allegedly presented to former Everett church elder Phil Poirier. The document includes this clause:

Together this day, we commit that our next church ministry will not be within ten miles of any location of Mars Hill Church, except with the express consent of the local pastors of the nearest church, the sending church, if different, and the Executive Elders of Mars Hill Church . We are, as Ephesians 4:3 says, “eager to maintain the unity of the Spirit in the bond of peace.” We care about the church, the testimony of our church, and the dear people who attend our church.

We would not want our actions to cause confusion or harm by making the people of Mars Hill question our love for the Lord, the purity of our church, or their decision to worship Christ here.

In a letter sent to executive elders, Poirer accuses the Mars Hill elders of "rul[ing the church] out of fear and intimidation." Go read all the documents—and see a map of the territory covered by this noncompete clause—at Patheos.