Adult diaper check at the airport causes controversy

Click on this link to read a Slate article about an uproar the TSA caused at a Florida airport when it conducted a strip search of an elderly cancer patient who was wearing adult diapers. Does searching (removing?) such diapers address a reasonable security concern? Or is this an example of an overzealous policy that underestimates the potential embarrassment to citizens? Are undies to follow shoes as the next mandatory removal item?