Was your workshop not based around Team Teaching? ... In your post, you seem to have focused on TEE. I think TEE is a marvelous thing and should be used by all Korean teachers. My co-teacher, who is one of the TEE teachers... and any other Korean I've spoken to on the subject knows that it's only an ideal way of teaching... something to be used "in a perfect world". I've heard of no-one who uses TEE in their regular classes. It is a show, mainly used for demonstrations, many of which my co-teacher and I have hosted or watched. These can be found here:
http://www.jnei.or.kr/sub/teacher/teach_vod_data2_4.jspAs for the usage of the native teacher... it depends on the class being taught. Most successful TEE demonstrations I've been in, or observed, use the following format: Korean teacher introduces the class and explains activities to the kids, Native teacher mainly focuses on pronunciation, leads games, etc., then both teachers help the kids through their activities. Of course the native teacher is used less in a TEE demonstration that a regular one, as the point is to demonstrate the Korean teachers ability to successfully teach a class using only English. It's like a show of methods and activities for use in the classroom.
Personally, I didn't think the first workshop was worthwhile. I felt sorry for the two teachers presenting as they had a pretty boring lesson to teach, but that's what happens when you're teaching from the book. I would love to work with that Korean teacher though, he seemed like a funny guy! How could it be improved? Have a smaller group of teachers in a larger number of workshops, each Native teacher/Korean teacher pair must speak or demonstrate a method, activity, or any thoughts or ideas they feel are important or interesting. These smaller workshops are also broadcast over the internet so that everyone has the opportunity to learn from and /or comment.