ML, I'm not sure the correct way to handle people like this. Apparently your friend who taught you went through similar things...nothing is new under the sun.
Since there are no controled studies being done on groups of people doing this protocol, there is no way to really give the proof some are looking for.
I look at it this way. Teaching this protocol can be alot like being a Christian. All are called but few will respond. We share with people who are looking for hope and we leave behind the ones that do not want to hear.
Along the way we may run across those that would cause persecution and we may not want to cast our pearls under their feet and other times it may take driving them out of the temple to keep the Truth from being tainted...but most of the time forgiveness should be given.
I just pray that God gives us the wisdom to know when to stand and when to walk away and He forgives each one of us when we choose to do it our own way.