I think the Goya reference is related to Francisco De Goya, the Spanish artist. Particularly his painting titled "The Second of May, 1808" depicting the uprising in Madrid and the companion to that piece, "The Third of May, 1808".
May 2nd is the day the "hack" started. Possibly a connection here, also Madrid was in the code.
Second of May: http://en.wikipedia.org/wiki/The_Second_of_May_1808
Third of May: http://en.wikipedia.org/wiki/The_Third_of_May_1808