This explains the mystery gap from 12:53 to 1:22, doesn't it??? One of the women went back, possibly both if Mangum was passed out in the car, and this could have been when the scheme was concocted? Or perhaps the ladies met up with the pimp, who told them to go back and get the money.
the cops where supposed to be there from 12:55 - 1:06.... so somebody's watch was wrong...