These are articles I recommend for reading about teacher role in online language environment.
New Skills for New Classrooms: Training Tutors to Teach Languages Online
by Hampel and Stickler 2005
Teaching languages online: Deconstructing the myths
by Felix 2003
What Does It Take to Teach Online?
by HAUCK and STICKLER
Recently, Compton (2009) has provided a review about roles of teachers in online language teaching with as well as a proposed framework to prepare language teachers for online language teaching.
Check it out here:
http://www.ingentaconnect.com/content/routledg/call/2009/00000022/00000001/art00005
