 PLOT: SPOILER: We learn that the handcuffed man and the guy with the  jean jacket were friends as children, which means that the  handcuffed man would have known jean jackets real identity. Later,  we learn that jean jacket was an undercover cop, which presumably  included having an assumed identity. It would have been deemed  conflict of interest by jean jackets superiors to allow him on his  undercover assignment to mingle with people who knew who he really  was.