This morning, the TWIST-Barry McGee wall on Houston Street was covered up by a tribute to SACE. SACE was the tag used by the artist Dash Snow, who died last year, while he was part of the IRAK crew (he also went by SACER). Street art experts we spoke to think that ADEK, who tagged the Domino Sugar Factory earlier this year, was behind the tribute. Graffiti photographer Martha Cooper calls it a "grand finale" to the TWIST piece, which replaced Shepard Fairey's work.