Follow up: Northern Focus you were right, the deck mounted "down" switch had shorted out internally. Many thanks for that heads up. Lessons learned: As pointed out, shackle or otherwise secure your anchor when traveling. A self deploying anchor while driving down the road would be ugly. In my case, turning on the bostons while staged and prepping for launch resulted in no damage, just a WTF moment. If this should happen to you I would advise that you just go ahead and cut the wires from the deck mounted switch accessed from the anchor rode locker. They are easily accessible at that point, and as awkward as it will be to re-attach the new switch to the existing wiring, that will be much easier than the path I chose. It took me the better part of three days to pull all of the wires from the switches to the solenoid. The V berth ceiling covers were easy enough but the factory did an excellent job of suspending the wire bundle in a near inaccessible channel. I stubbornly insisted to know for sure if wires had been crossed where they were joined from the switches to the wires that completed the circuit to the solenoid so I persisted. I also didn't want to go through the gymnastics required to cut and re-attach the relatively easily accessed wires in the rode locker. I will attest that the factory did a near bullet proof joint from the switch wires, to the wires completing the circuit to the solenoid so I think that is an unlikely place for the problem to exist if this should happen to you, and it is easy enough to eliminate problems in the other switches.
Hope this helps someone else.