Well, you really do learn something every day!
I don't think it's broken at all!!
Spector's brilliant design has saved the day!
The truss rod is a free-floating/friction held unit, that sits in a channel in the neck below the fingerboard and acts like a bow.
What I think has happened, and confirmed by the good people in the Spector Nation FB group is; In pitch, the truss rod was held fine. As we've dropped the tuning, the string tension dropped and the neck straightened, loosening up the truss rod unit. The tension nut may not be moving freely and the end has slid out, making it look like the rod (in usual anchored types) has snapped inside the neck!
Loosened off, the truss rod should slide right out of the neck to be worked on or replaced.
This is the 1st time I've heard of this type of truss rod, it's frickin' genius!
I can get a complete replacement unit from the States for $25 plus shipping if need be!
Excuse the pun but.....what a relief!!