I'd argue he is using that structure - granted in a very broad and large sense - i believe the Liszt b minor sonata is in sonata form with an exposition - development and recap. It even contains movements within a sonata form, which blurs the lines between sections.
But I love the piece for the same reason you do, it blurs those lines and expands greatly on the sonata form that we typically associate with Mozart, Hadyn, Beethoven...
I welcome you to check out my Sonata-Fantasie in D major,
http://www.youngcomposers.com/music/4725/winter-in-the-sierra-sonata-fantasie-no-2-in-d-major/
Where I also expand sonata form, for example most of my entire recapitulation is a complete variation of the exposition. Enjoy :phones: