I have followed this case since the beginning, and my feeling has always been that he used the "you are not allowed to be on this bridge/you are trespassing on private property" type of statement to order them "down the hill" before he turns them in or reports them to authorities etc. Then when behind them, he did his heinous act. Unplanned. Off the cuff. Spur of the moment. IMO They were at an age where they were still impressionable, maybe a little naive & trusting at first, especially with authoritative male adults. Until it was too late & their only hope was to start recording I am hoping & praying this new (old) info will jar someones memory!