I can see your point Mike but with explosives I think they did the right thing by shutting down. If I was in charge, and I believed a Grenade was in someone’s luggage, I would not have taken any chances.
Now the situation with pp is a different story. They should have had you sit in a chair PP and taken your shoes off for you, and then put them back on. That is what I would have done.
Semper Fi,
Bob