Torvald's own net is supposedly snagged by his chariot's wheels and he is dragged to his death, yet when the chariot comes to a stop his net is tied to his chariot inside the wheel, not on the outside of the wheel where the net was snagged.
When Barabbas is sent to the sulfur mines, a guard chains him to another prisoner by hammering closed an iron link shaped like a 'C' with both ends of the 'C' glowing red-hot. The same technique is shown at least one other time. However, it's not the ends of the 'C'-shape that should be glowing red-hot in order to hammer the link closed, it is the middle, where it needs to bend. Cold iron is brittle and needs to be heated to bend or it will fracture.