The masks used by the thieves look like former US vice president Dick Cheney. He was previously mentioned in the series (near the beginning of episode five): Bobby talked about an incident in which Cheney shot a friend in the face in a hunting accident, and also that a study was made with people in Dick Cheney masks which, according to him, were mean to crows to see if they would remember it. In actuality the researchers wearing Dick Cheney masks were nice to crows.
The title of the episode comes from Simone Weil's book "Gravity and Grace": "Attachment is the great fabricator of illusions; reality can be obtained only by someone who is detached."