Deleting the Unravel EC2 instance
From your EC2 console, select the Unravel EC2 instance.
In the Actions pull-down menu, select Delete Stack.
Click Yes, Delete.
Monitor the Status column to make sure the deletion is complete.
Caution
If the deletion fails, use the EC2 console (menu on left) to disable auto-scaling. Otherwise, Amazon will keep re-spawning the EC2 instance.