Greg -
I've never seen this before.
I could suggest two operations, but I'd be leary of proceeding on a production system without the adult supervision of NetApp support !
You're suggestion of failing the disks sounds good, but I wouldn't swap them out.
Instead I'd use the advanced priv 'disk unfail' command.
The other more risky option would be to fail over to the partner.
Again - I'd open a ticket with support rather than proceed on my own ...
I hope this response has been helpful to you.
At your service,
Eugene E. Kashpureff, Sr.
Independent NetApp Consultant http://www.linkedin.com/in/eugenekashpureff
Senior NetApp Instructor, FastLane US http://www.fastlaneus.com/
(P.S. I appreciate 'kudos' on any helpful posts.)