I used to read a lot of this kind of thing in stories written by a friend who was trying his hand at Horror at the time that I was writing appalling teenage SF. He was a natural storyteller and, although he hadn't found his own voice, he had a knack for imitating Stephen King.* But he had a couple of stylistic tics that consistently destroyed whatever mood he had created, and one of them was wandering body parts. Usually the suspension of disbelief kicks in when I'm engaged in a story but a sufficiently implausible metaphor will knock me out of even the most tense scene.
His particular favourite was "spidering hands". Had this been used once, very carefully, for specific effect, then it would have been great. It is not workaday prose. It is a surprising juxtaposition that forces the reader's attention onto it and challenges them to imagine what it means. "Wandering body parts" is a poetic technique that needs to be used carefully, by authors who know what they're doing. Otherwise it sounds silly.
And it's a technique that hobbyist authors seem to have a terrible fascination for. As such it's probably one of those red flags that quickly identify an author as "not ready for publication", and that must be so useful for winnowing the slush pile.
* Some may see a comparison to Stephen King as negative, but I mean it as high praise. Imitating King is something that many attempt but most fail miserably at. This guy was definitely learning from King rather than pastiching him.