The rear brake switch had to be replaced on my Trophy just before I bought it a couple of months ago, and the symptoms were the same.
Here in England it was only a couple of days from ordering before it arrived and It's really easy to change. Not sure how quickly you'd be able to get one in the U.S.
Just unscrew the switch body and screw on the new one, give the rear brake a quick bleed, and Robert's your mother's brother!
Good luck getting it sorted
