I'd have to say that I agree with that assessment based on what little I have heard about this. I heard that one teacher told him not to show it around, which means that at least one teacher thought that it wasn't a bomb (you don't tell a kid to hide a bomb). So, some of the adults in the situation thought nothing of it, others seem to have been trying to "earn their salt." None seem to think that it really was a bomb, so what was it they were actually after?