Originally Posted by
exerda
(And I have yet to hear the water ban apologists explain to me why liquids are such a more credible threat than solid explosives, which presumably could with all the focus on liquids be smuggled onto a plane without a problem... put a slab of one inside a walkman, a laptop's spare battery, etc.--if you don't get ETD'd, you're golden!)
That's an easy explanation: According to the TSA philosophy a threat is not a threat until it has been tried once. Nobody has reported that solid explosives have been in used the passenger cabin to take down an airliner so therefore it is not necessary to check for those.
I guess whoever ordered to purchase the puffers was told of his blunder and then told to remove them from regular use