A funny thing happens at the start of part 4 of my joint interview with Survivor‘s Russell Hantz and Boston Rob Mariano. Rob, who has already gone to great lengths to convince Russell that he won’t be gunning for him when Redemption Island kicks off on Feb. 16, goes so far as to actually defend his former foe. However, even Rob has a breaking point, as seen when the subject of sock burning comes up. He warns Russell in no uncertain terms not to light fire to any of his clothing, with threats of fisticuffs if ignored. Check out the final installment of our exclusive on-location joint interview in the video player below (as well as the first 3 parts, which immediately follow). And for more Survivor news and views, follow me on Twitter @EWDaltonRoss.