I am not sure how Jerry Sandusky could be histrionic. True, he likes being around people. However, Sandusky is not dramatic or draws attention by appearance. The people who I would think are histrionic are Diane Downs, Casey Anthony, or Lori Drew.
Histrionic Personality Disorder DSM-IV criteria.
(1) is uncomfortable in situations in which he or she is not the center of attention
(2) interaction with others is often characterized by inappropriate sexually seductive or provocative behavior
(3) displays rapidly shifting and shallow expression of emotions
(4) consistently uses physical appearance to draw attention to self
(5) has a style of speech that is excessively impressionistic and lacking in detail
(6) shows self-dramatization, theatricality, and exaggerated expression of emotion
(7) is suggestible, i.e., easily influenced by others or circumstances
(8) considers relationships to be more intimate than they actually are
http://www.behavenet.com/histrionic-personality-disorder
Sandusky is no doubt immature and narcissistic. He has an emotionally age of a teenager despite normal intelligence. He is clearly obsessed with control and power as he is a psychopath. People who are narcissistic are immature. One thing is, I don't know Sandusky gets angry easily like other narcissists.
Histrionic is strongly correlated with bullying.
Personality and neuropsychological correlates of bullying behavior
http://www.uccs.edu/~faculty/fcoolidg/pdfs/PersonalityBullying.pdf