Homesexual stabbing rape designed by God?

In the chapter "Nasty Habits" in "The Flight of the Iguana" by David Quammen. He describes the bedbug Xylocaris Maculipennis and how it has adapted a curious way of reproduction, that of homosexual stabbing rape. Apparently some of the various bedbug species make use of a "mating plug" where once a male has mated with a female, the male "seals her shut" preventing other males from mating with her. Some species have adapted around this by stabbing rape, where the male impales the female and bypasses the mating plug. In Xylocaris Maculipennis, this has been taken one step further, where the male will impale and inseminate other males, and the rapist's genes enter the bloodstream to be carried to females by the victim. In this way, the rapist concieves by proxy.

above found at http://www.skepticfiles.org/evo2/vstigial.htm