Donald Young mysterious death

Larry Sinclair told us that a man named Donald Young came to him and told him that he also had a sexual relationship with Barack Obama. Donald was an openly gay choir director at Obama's home church. He was shot in the back of the head right before Christmas in December 2007 right as Obama's candidacy was picking up steam.
"A man who worked as a choir conductor and school teacher is found shot to death. The victim, 47 year old, Donald Young. Young's death has been ruled a homicide."

The death was seen as a mystery at the time. I wonder what could have possibly happened.
https://journalofgospelmusic.com/gospel/chicago-choir-directors-death-a-mystery/