Only to "clear the field":
A simple noose around an object spills if one chooses to pull the wrong standing end,and there remains an Overhand knot.With regard to the Fisherman / Englishman loop, this is not the case, because, pulling from that which is the wrong side of a simple noose , there is however another"extra- noose" (or maybe better:an Overhand around the "wrong "standing end),that goes to collide against the first preventing that it slips, forming a fixed eye .But if now one pulls this Fisherman loop by the other part, the first noose will return to behave like a normal noose, going to tighten the object that wraps.
If the loop that you show is not a loop of this type and the knot's nub there visible consists of a single knot, then I do a clean sweep and start all over,otherwise maybe it is to find out which is the method that you mean.
