Today, cleared onto runway, him head down., me lights and strobes please. Him, No, its not SOP. Me, please do it or I will. I will take it up with CP.
Sounds like a situation dealt with easily and professionally. Referring it to the CP will hopefully also ensure that this is not a systemic problem.
A note on CRM courses, specifically the sections on human interactions. If your course does not involve role-play, it can be worse than useless. It could be that the F/O in the above was exposed to the standard Transport Canada CRM course, including the dangers of deviating from SOPs. Putting a bunch of scenarios in front of people and making them think about how to respond to them will help ensure understanding of how CRM is supposed to work. My course has a half a dozen scenarios, ranging from a Garuda like scenario to one similar to the above post.