i don't but we need to get some confirmations on when exactly he died, oh, and his name!
Well his real bio father's last name is Hornbeck, Akers had not adopted Shawn yet so technically he is not Shawn's father yet in the legal sense.
Either they have the wrong Hornbeck or Shawn's bio father did not die in 1999. From what I know about the 1999 date is hearsy and I have not seen any proof of his real bio father being deceased. The man may be sitting in prison right now.