I'm still wondering (and hoping) that all of this was just part of his normal interrogation strategy. The reason I think this is a possibility is because after rendering the "NO OPINION" decision, he intensely persisted in trying to get me to make an admission. Also, at the very end, he told me that I could call him in the next few days if I decided I did want to make an admission. So, he left the interrogation "open-ended". I don't know the purpose of this, unless it's just a final attempt to get me to fold.

The most frustrating thing is that I didn't pay $500 for "NO OPINION". I didn't even previously know about "countermeasures" and had done no research. I wasn't aware of the fallible nature of polygraphy and always thought it was foolproof, which is why I jumped at the opportunity to take it voluntarily.

Thanks you guys for your feedback.