I'm thinking the answer to this is rather obvious, but I've got 6x
4.3GB drives in a RAID 5 array (5 hots, 1 spare). When the set gets
configured, I get a message stating sd0a is hosed, and it gets
ignored. The RAID works fine (reading, writing) , but I still get that
error.

Am I to assume that this means the drive has failed, and that I should
begin reconstruction to my spare drive? Are there any other
suggestions anyone could add?

Thanks in Advance, 
--Alex Cavnar