I've had the question answered here before by the professinals about how do the girls clean their rectums so well as to do ass to mouth. The answer can be quite complex with special diets, cleansing creams, chemicals etc.
However, if one watches Woodman's casting series you'll see him quite often convince a girl that came in for an interview to consent to anal on the spot, perhaps within 30 minutes of the start of the interview.
I'm wondering if he's ever had any "surprises" while doing this spontaneous anal? I'm sure he would edit it out of the finished product surely it has happened?