Backing down is likely the best way IMHO. Have a spotter walk you down and all should be well. After the first couple times, it'll be easy-peasy.
Using a front receiver may provide a measure of control and maneuverability, but will also require 4WD to be advantageous. If you get yourself into a pickle while pointing downhill, you may not be able to back up the hill in 2WD. Additionally it would give you the ability to use low range to maintain your speed as the trailer is dragging you down the hill.
Here's what I would ask: Is it possible to jack-knife the trailer perpendicular to the road and still drive around it? If so, then there's your answer. Drive it straight down the hill, and when you get to the dead-end, jack-knife the trailer until it's perpendicular to the road. Un-hitch, drive the TV around to the other side of the tongue, re-hitch, and drive out.
