Continuity mistake: During the fight inside the spider, West wraps one of Loveless' men in a chain and kicks him out the door. You clearly see that the chain comes completely off its roll and falls to the ground, presumably with the body. Yet later on in a wide shot of the spider you can see the body and chain still suspended from the spider. Then when it crashes, West uses the hanging body to save himself.
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Suggested correction: We do actually not see it fall to the ground, just vanish outside. It could be that the end of the chain got caught onto something just beneath the opening.