This is making a heck of an assumption.
Tried and found guilty on the internet. good plan --NOT.
Apply a touch of common sense. If you were a tyre guy and wanted to samatage a bike theres a shit load of other ways to do it that would make it look like a "shit happened" deal.
I'd say at some stage the paperclips fell into the tyre ---be it on the truck be it on the rack and they have gone unnoticed.
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