I'm told vegetable oil can have 2-3% animal derivatives without disclosing on ingredient panel and still be called vegetable oil.
Sounds like a serious problem, if accurate.
So according to this, unless it’s confirmed that the oil was kosher in the past 24 hours, (not quite sure how that would be done), and there is 60x the residue, I don’t see why it would be permitted to eat the popcorn.