SITREP: After hours of disassembly & reassembly I capitulated and paid $140 to have it towed to my husq dealer.
They kept it for exactly a week and charged me one hour of labor. Fair.
So what was the “HLU CAN FAILURE” that basically shut down my bikes computer? A pinched turn signal wire (r l)!!! I had finished installing LED turn signals when this happened. Even the mechanic was laughing saying it was crazy.