Additionally, it’s under tension. When suddenly not under tension, it has to release all that energy somehow - and these things have a LOT of potential energy wound up in them, it’s like your engine throwing a rod - except you, since you’re working on it, have a tendency to potentially wind up as the engine block in the analogy.
Garage springs become a lathe, spinning really fast. I’m sure you can find examples of lathe accidents on NSFL channels.
Additionally, it’s under tension. When suddenly not under tension, it has to release all that energy somehow - and these things have a LOT of potential energy wound up in them, it’s like your engine throwing a rod - except you, since you’re working on it, have a tendency to potentially wind up as the engine block in the analogy.