For some years Latin teachers have been talking about their profession in terms of Krashen and Blaine Ray. Bob Patrick is one of the founders of this site:
http://groups.yahoo.com/group/latin-bestpractices/
Bob and Rick Winterstein (Tacoma, WA) have contributed or will contribute articles in the journal British Journal of Classics Teaching about TPRS.
I post this information here for any Latin teachers interested.