I have to be honest, I'm not a huge fan of the Farrars. There were a lot of rumors and nastiness going around about them and their "school" and their "camp".
While I think there are a lot of things accetable within one's religious or spiritual practice, those things do not include the harming of other people whether mentally, emotionally or physically.
I don't know how many, or if any of the rumors were or are true, but there were enough people who disassociated themselves with them that I have my wonders.