Exactly. We aren't talking about making decisions or suggesting a course of action. That is the player's responsibility. All Rulesman and I are talking about is stepping in when the player seems unsure (or is obviously incorrect) of his actions, and informing him that we are an available resource.
In one of the threads below this one (the one at the Badlands Course), I would have stepped up and made my services available to him, and I would likely have been aware of any particular local rule which would have included or excluded those border rocks with the cart path, or have been able to find if they were considered as immovable. Barring that, I would have had a radio to contact the head RO for a ruling. If the player subsequently chose to ignore, me, then it's his choice, but I would have done what I see as my job.