Twitter user @atunnell suggested
Try putting it into a USB to SATA dock or adaptor and seeing if you can see it that way, RAID card itself may be the issue.
I did that and the drive still contained the original boot volume. That was good news.
So @atunnell suggested
I would use carbon clone to make a back up and then wipe the main disks and try a re initialize If that works then restore the image
I did that and it worked!
So I'm all set for now. Thank you @atunnell !