It will need to come in if it is not locking out. Just to ensure it is not a weird PocketWizard problem, leave the cord plugged in, but disconnect the PocketWizard. Make sure the cord is fully inserted (so you cannot see any silver from the plug). Then fire a flash behind the suspect light and see if the light fires. If so, there is a problem in the sync/slave lock out, which will require the light to come in.
You can visit this page for information regarding having the light repaired if needed:
http://www.paulcbuff.com/repair.php