Stack delete complete but physical resource remains

[Dmitriy]

I created stack with nova servers and cinder volumes attached to servers.
Then i redacted token expiration time in /etc/keystone/keystone.conf to 60 seconds (while trying to reproduce some other bug).
Restarted apache to restart keystone.
Start stack deleting. Eventually deleting fails (as expected). Traceback of fail:
http://paste.openstack.org/show/494646/
Returned token expiration time to normal value (7200) and restarted apache again.
Start stack deleting. DELETE COMPLETE. And stack is no more.
But physical resources are still there! Usually not all of them, only those that heat did not have time to delete during first deleting. You can use 30 seconds for expiration time and all resources will remain.
Log from heat during second delete:
http://paste.openstack.org/show/494653/