A number of ASU folks have had contact with Dan Harden and some have hosted him in their dojo. Why don't you just check with them to get your answers and to determine if he knows his stuff, as well as teach it. If you are not going to make the effort to check it out in person maybe the word of someone you have trained with and respect would either clear the air for you or give substance to your concerns.
This. All the arguments about history and "disrespect" aren't really relevant to the question of whether the man is teaching something worthwhile.