title: Can't detach network interfaces
body: <p>I did the AWS misfits tutorial and I thought the cleanup would be as simple as deleting the Cloud Formation stack. However, items failed to delete so I am trying to clean them up manually to assist the Cloud Formation stack deletion.</p>
  <p>I keep getting an error when trying to Detach the network interfaces (I am logged into the root account):</p>
  <p>Error detaching network interfaces:</p>
  <blockquote>
  <pre><code>eni-0047gfhfgh8ab0e: You are not allowed to manage 'ela-attach' attachments.
  eni-0f4a46hgfha757e: You are not allowed to manage 'ela-attach' attachments.
  </code></pre>
  </blockquote>
  <p>I am unable to delete my VPC without these being deleted.</p>
  <p>The stack as a whole is failing to delete because of the following:</p>
  <blockquote>
  <p>The following resource(s) failed to delete: [InternetGateway,
  PublicSubnetTwo, VPC, GatewayAttachement, PublicSubnetOne].</p>
  </blockquote>