Exchange 2013 CU3 Can't Access ECP from Office365 Enabled Account

We recently upgraded our Exchange 2013 server to CU3 to fix the OWA redirection error. Unfortunately, we've now noticed that any admin mailboxes that have been 'moved' to Office365 can not access ECP and instead get a redirect warning to OWA.

I had to create a new, onprem admin account to access in the meantime.  This is the message I see:

X-FEServer: EXCHANGE
Date: 12/3/2013 6:13:23 PM

I assume this is due to the fix for OWA redirection?  How do I manage Exchange with my 'oncloud' mailbox accounts?