Yesterday, Dr. Robert A.J. Gagnon (author of The Bible and Homosexual Practice: Texts and Hermeneutics [2001]) debated Megan Rohrer, a Lutheran pastor who is a biological female who is deluded into thinking they are now male. The debate can be found on facebook here.
Update: the video is now online on youtube:
Notwithstanding some connection issues on his end, Gagnon easily won the debate.
As for Rohrer's nonsense about the Bible affirming gender change and the like, see Gagnon's article No, God Isn't Transgender.