Interesting point MJ. my interpretation of LASORs is that the CRI can only instruct the person if they hold a VALID licence, ie not expired.
JAR–FCL 1.375 Class rating instructor
rating (single-pilot
aeroplane) (CRI(SPA)) –
Privileges
(See JAR-FCL 1.310(a))
The privileges of the holder of a CRI(SPA)
rating are to instruct licence holders for the issue
of a type or class rating for single-pilot
aeroplanes.