Foreign Key violated

Client reported an issue where it appears a foreign key has been violated

prod=#\d rma_items
[snip]
rma_items_rma_id_status_fk" FOREIGN KEY (rma_id, rma_status) REFERENCES
rmas(id, status) ON UPDATE CASCADE ON DELETE CASCADE

prod=# select i.rma_id, i.rma_status, r.id, r.status from rmas r join
rma_items i on i.rma_id = r.id and i.rma_status != r.status;
rma_id | rma_status | id | status
------------+------------+------------+--------
1008122437 | r | 1008122437 | c
(1 row)

Attempting to reinsert this data again causes a violation error, so it
doesn't appear to be broken

prod=# begin;
BEGIN
prod=# insert into rma_items (rma_id, order_item_id, return_reason_id,
rma_status) values (1008122437, 1007674099, 9797623, 'r');
ERROR: insert or update on table "rma_items" violates foreign key
constraint "rma_items_rma_id_status_fk"
DETAIL: Key (rma_id, rma_status)=(1008122437, r) is not present in table
"rmas".
prod=# rollback;
ROLLBACK

This is running 9.2.4 on CentOS. If anyone can suggest how I can look into
this deeper and find what the problem may be, I'd appreciate it. I'm here
at PGCon if anyone is available to help IRL as well

--
Keith Fiske
Database Administrator
OmniTI Computer Consulting, Inc.
http://www.keithf4.com