Re 33, in clues of this type the word 'this', 'such' or similar is normally placed next to the defining word or phrase (surely it has to be for the clue to work, otherwise what is 'this' indicating?). In the clue in question 'this' is nowhere near the defining word or phrase even after removal of the extra word.
If there's nothing wrong with the clue then my understanding of this type of clue gleaned from Ximenes, Don Manley et al, and from examples solved over the years, must be wrong. Whether I'm wrong or not I have never seen one that's like the one presented here.