Just got sent this pick of this MTA piece in North Hollywood.
Big thanks to Jon for sending in the photo, and he reports that the building owner came out to see what he was doing when he was taking pictures. At first he thought Jon might be the police, and then he was just puzzled that Jon wanted to take pictures of graffiti. Jon says that the building owner told him that the 'taggers' got arrested for the piece over the weekend.
But we haven't heard anything else to substantiate the bust.