Whidbey was experiencing problems with the secure shell daemon. During the troubleshooting process we were unable to get the daemon to restart correctly, and the system rebooted at 12:15 pm.
Upon further investigation of the last log, it became clear that the shutdown command issued on April 14 during preventative maintenance froze. In working with the sshd2 daemon, the shutdown completed.
The secure shell daemon is now running correctly.