Following the backlash, Sung Hoon’s agency spoke out on the “attitude controversy” the actor got embroiled in. Here’s what Stallion Entertainment said.  Stallion Entertainment Issues Apology for Sung Hoon’s ‘Attitude Controversy’ On June 8, Sung Hoon was embroiled in an attitude controversy during his appearance on tvN’s variety program “Lined Up Restaurant.” The celebrity was accused of showing an unpleasant reaction to the queueing at the restaurant the cast visited.  (Photo : Stallion Entertainment’s Instagram)Sung Hoon’s Agency Releases Statement Following His ‘Attitude Controversy’ In the episode, Sung Hoon looked annoyed and said he is the type of person who is not a fan of good restaurants.