Sentence:  Even at that, the most plausible way of understanding, "the text deconstructs itself" is surely that the text signals the itinerary of its desire to be "about something," and that this itinerary must <WSD>ruse</WSD> over the open-endedness of the field of meaning; at a certain point, it is possible to locate the moment when the rusing reveals itself as the structure of  unresolvable self-cancellings. 
Meaning of the word marked with <WSD> tags:  To deceive or trick using a ruse.