I assume this is a RAID 0 array. My understanding is that if a RAID 0 array fails, beit via drive or controller failure, all data is lost. This is do to the "striping" of data across all the drives.
However, I've hear of persons moving their RAID 0 array from one PC to another, and the other PC reconized the array, and was completely usable. If you feel it's your controller, do you have this option? Move the drives to another PC, so you can copy the data to a single drive?
This is why it is so important to backup, either internally or externally to another drive.