Got this dirty 224kbps from here : http://laudios.ru/search/squarepusher

AFX plays it here :    • APHEX TWIN Live in Texas - Original U...  
Few other and previous rips :    • Squarepusher & Aphex Twin - Reconstru...  
   • Aphex Twin / Squarepusher - Reconstru...  

As far as I know, it is not officially released.