Turf Martin if you have to turf someone. Turf Farquar, who was useless 1000% this time last week and who could be as useless again in a week.
But don't for a second drop Bogarts or Profar, for that matter, whom you are surely considering, too. You bought in super low, and if you get to keep them easily, don't squander that for the chance at the playoffs.
Worst case scenario: deal Bogarts and McLouth to another owner for a better OF and then get a holds guy afterwards, but even there, unless it's J Up, I'm not racing to do it.