BendSinister: I was close to archiving this one anyway, but it turns out that it needs to be at least disabled immediately as the tree harbouring the cache has recently been comprehensively obliterated. No idea why, as it was in the middle of nowhere (by peri-urban standards anyway) and surrounding foliage seems to have been left alone.
Many thanks to the final finder, who miraculously found the cache amongst the wreckage and captured the carnage for me.
Also thanks to everyone who solved the puzzle and for the numerous amusing logs!
Fun fact: A big Joy Division/New Order fan (and geocaching sceptic) on being told of this cache's demise: "I don't know how you could take something so beautiful and sully it in the first place." LOL