I finally got the RAID array to an OK state, but have not restarted the NAS as of yet. If I log on to the Open-E GUI for the NAS, it tells me there is no logical volume (which is what it was doing when the array was degraded). Should I restart the NAS now that the array is good? Will that bring the logical volume back on line?
Yes, try to restart and if that does not work try the Repair fileystem and check to see if you can set it as the Default Volume Group in the Extended tools as well.