OP...I am sorry you had to go through this. It disturbs me deeply that you were coerced into removing your clothing...and clarification on that would be of interest to many here, as most of us would refuse to go into a private room with the TSA without a witness of our choosing.
It is also odd that you never got an explanation, or apparently, an apology for this treatment.
(Making sure this thread stays on the first page a while longer, so maybe someone could answer your questions, or provide any further info on who to report this to, because it should be reported.)