John "don't touch my junk" Tyner opted out of both the porn machine and the grope and he was not arrested or fined. He was allowed to leave the airport. I would be curious as to whether an LEO (the TSA has no real power) could do a force-grope on you. Presumably a group of LEOs (probably male) would have to hold you down and fondle your genitals if there really is no double opt out as BearX claims. Or could they detain you at the checkpoint for years? Both scenarios sound improbable to me.

Make sure you inform your kids what might happen and have a plan if you are not able to fly or get arrested for refusing to be sexually assaulted. If your 10 year old daughter is pretty she will probably get chosen for the scope. Does she mind being seen naked by some strange adult in a hidden room? Maybe you should ask her. You might also coach her on what to do if the TSO grabs her junk. I'd advise yelling "Help! Police!". I think there is no more sympathetic a victim than a 10 year old girl.