I'm not familiar with the term "twinger" how does this differ from a "Barber hauler"?
Twingers, twings, tweakers are an application of the general mechanism of a barber haul to a spin sheet and guy. A barber haul might also be applied to a jib sheet or other line on a sailboat.
For the OP, look at this video to see the use of twings. The higher the wind speed, the lower the blocks when running downwind (especially solo when it is critically important to limit spinnaker head oscillations which might result in a broach; on a reach some believe you should release the sheet twing to let the sail "breathe" - let air release from a flattened, not cupped, leech:
Adrian Johnson, winner of the 2010 Singlehanded Transpacific Race to Hawaii, always demonstrates masterfull twinger use on his Olson 30 videos - you can see them snubbed down to the deck at higher wind speeds:
,,,and here, too, one of my favorites (skip to 5:00 or 7:00 min marks for skillful twings in action):