Hm, I'm pretty sure I posted a comment here earlier, but I don't see it now.  Also, I thought openshift-bot should have posted this commit here when it merged:

    Routing SPI: Send notifications on rollbacks
    
    Add rollback methods to NotifyAliasAddOp, NotifyAppCreateOp, and
    NotifySslCertAddOp.  These rollback methods invoke the notify_remove_alias,
    notify_delete_application, and notify_ssl_cert_remove methods,
    respectively, of the routing service.
    
    This change causes the ActiveMQ routing plug-in to send :remove_alias,
    :delete_application, and :remove_ssl notifications when an application
    creation fails so that anything listening for these notifications (such as
    the OpenShift routing daemon) can properly clean up any configuration that
    it may have done in response to the earlier corresponding :add_alias,
    :create_application, and :add_ssl notifications during the application's
    creation.
    
    This commit fixes bug 1186036.

https://github.com/openshift/origin-server/commit/51dbfedca1bfd3d939e89dadd261225b14479bee

https://github.com/openshift/origin-server/pull/6058