And yet, as that quote points out so well, the SDA church will proceed with it's God-given mission, "despite lingering differences over not just culture and ecclesiology, but scripture, too." 
A house divided won't stand if it's built on sandy soil. But when it is built on the Solid Rock, the rains can fall, the floods can rise, the wind can blow hurricane-force, but it shall not be moved. Sure, it will be buffeted. Yes, some in the house will leave because they're scared - they don't have faith in the Solid Rock's security. And when they leave the sanctuary of the house on the Solid Rock, they're at the mercy of the storm upon them and will get swept away. All because they chose to go their own way, instead of staying inside the safety, security and protection of the house on the Solid Rock.