What happens shortly after the Spin membrane is gone?

They can see the stars, but as the motel owner notes, they look scattered as compared to the ones he remembers. The flicker has ended. The protective Spin membrane is now gone. In most people's mind, this could only mean one thing: the end of the world was going to start as soon as the sun would rise. Oceans would be boiling, forest would burn and people would die. Newscasts keep reporting waves of suicides and violent acts of all kinds.