In case anyone is interested, "Kung Fu Tai Chi" magazine's November/December 2009 issue (now on newsstands) contains two articles which cover and discuss the recent symposium in Nashville. They also discuss Yang Jun, Yang Zhen Duo, and the Association among many other things.
1. "Yang Family Comes Out in Style" By Dale Napier pg. 48
2. "Symposium Makes U.S. Tai Chi History" by Dale Napier pg. 109