TwoBlock,

I understand the frustration, and can only suggest not responding to the sarcasm.  Polygraph examiners do get annoyed when trying to make a point and having the opposition attacking.  i personally don't get weighted with the emotion, I attempt to stay on subject. 

We do have some examiners that enjoy attack mode.  By monitoring this site and learning from individuals posts, I am able to become a better person and have learned to treat all with respect.  Many examiners I associate with are of the same nature.  We also learn from our mistakes.