Yes, he can get a hard copy. He just has to wait a few days longer before he can place his order.
Those 'certificates not available' notices are temporary, and they apply to all certificates, not just those ones, while SP is closed for the New Year holiday break. They will be back to work on 3 January and the certificate ordering system will be reactivated after they return.
As I have said, they could have worded it better.