Well, some folks have had issues using the whole drive and not a partition of the drive, like sdb1 instead of sdb... even through sdb1 is a partition of the whole drive. Can't say if that is an issue here.

The only thing left is to try a forced assembly:

Code:
sudo mdadm --assemble --force /dev/md0
There's something at issue with sdc from reading the logs, eh?