Laphria - like Orson the puzzle was finished for me without solving the very clever working of X's title from the thematic words, rather than the reverse, ie having to spot the clever little anags first. PARALYMPIAN came without any reference to the preamble and X then really was quite likely to be one person only, particularly with a title. I think the idea should be to need to parse clues and the associated puzzle BEFORE completion. I also find extremely long and contrived preambles produce a disappointing challenge.