Hi John:
Power cycling a 5508 wireless LAN controller shouldn't have any impact on NCS. The best source of accurate information will be the logs.zip file that would come from running the command
backup-logs 06282013 repository
That's going to cause all the logs for NCS to be backed and zipped up, and the copy put over on the repository. Once you have that, you can unzip it, and the place to start would be the hm-0-0.log file. That's the log of the Health Monitor service that watches over everything and tells the other services like the database, FTP/TFTP servers and such to kick off, and logs what those services do when told to kick off. Based on which service isn't behaving, you'd check the log for that service for more details of why that service isn't behaving.
