This article explains pretty well why he is such a POS:
http://www.slate.com/articles/sports...but_there.html
"If you test positive and get suspended, then it’s standard procedure to explain away your absence from the field by passing the blame to someone else. If you test positive and don’t get suspended, then you should accept your good fortune and keep your mouth shut. Instead, Braun decided to run up the scoreboard on his ill-gotten victory"