I think it would have been fun to go all the way to the gate, then tell a GA that your ID and BP were never checked by TSA. You could have done it in a "Oh my gosh, I just realized..." sort of fashion, and suggested that this was happening to you and "a whole bunch" of other people.

A terminal dump at ORD on a Friday morning would have been a nightmare, and a considerable embarassment to TSA.