This whole argument is ludicrous!
Technically, all the women members on this site who are Christian have been teaching, preaching, edifying, admonishing, ministering, and praying with all the members on CC. So if there's any male member who disagrees with Christian women "speaking" in a unified Christian assembly, wouldn't he be in error just by remaining on this site?
I mean seriously, if you think it's unbiblical for women to speak, why are you a member of this site which invites women to speak?