While I disagree, in principle, to the use of these scanners (mainly because I am not convinced that they are value for money, nor do I believe they make us safer) frankly I could give a monkey's is some TSA 'babe' wants to look at my plumbing, or some bored TSA guy want's to drool over an image of my wife. Frankly they could get a better look at any beach anywhere - or they could simply surf on the internet. (where they will not find either my plumbing or images of my wife, I hasten to add)
I certainly didn't think, when they introduced these things, that the images wouldn't be stored, shared, used for training, etc.
While I understand that you are concerned that you were lied to, weren't you just a little naïve to have believed them in the first place?