So I had a similar experience. It was the first time I had to op-out. After the pat down, I tested positive for explosive residue. So I had to go to their second level pat down. At this point I was pretty frustrated, and started to belittle the TSA. When they open handed my junk, I said "Did you go to school to learn to give hand jobs like that?"
Needless to say they were not very happy, but I passed their second level screening. Since they couldn't do anything more, they called AA's manager, who just came in and said "Your not flying with us today." and left.
I went out bought another ticket with Continental, and talked to their manager about what happened. He expressed how he hated the TSA. Before my ticket was even confirmed with my agent. He gave me a pass to get through security without a ticket. I go through TSA wink and the officer who I made the comment to, and flew that same day.
When I got to my destination, I went to AA's counter and asked for a refund, on my non-refundable ticket. She said the notes said "You failed TSA's screening." I said well I made it here didn't I? She called head quarters, and they gave me a full refund.