According to Clay Rogers, Glen bragged to him about killing more than 70 people. (Glen later said the claim was a joke.) And Clay says Glen told him he had been "partying" with Brown Simpson prior to her June 12, 1994, killing.
According to the documentary, O.J. Simpson knew Glen—who was working as a house painter near Brown Simpson's Brentwood home at the time of the murders—and had paid him to steal a pair of $20,000 earrings he had given her. According to Clay, Glen boasted he was going to "take her down" and said that O.J. told him to kill "the bitch" if necessary.
Interesting theory about an old story... Dude certainly looks like a serial killer/Billy Ray Cyrus.