Joba Chamberlain had a run in with the law during the offseason. He was charged with driving under the influence.
In the movie "I Know What You Did Last Summer," a group of teenagers are partying and afterwards are driving and hit a fisherman. They decide to get rid of the body and never speak about it. The Fisherman comes back and decided to haunt the teens.
Joba fits the personality of this Fisherman because he had that run in with the law, but put it aside. Like the Fisherman he was out for revenge. Joba wanted to save his reputation as a role model for young kids, while the Fisherman just wanted to get rid of his "killers."