Taking it to it's extreme, here (so cover your ears and look away now if you're squeamish or easily offended ;-D)
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...all characters would end up in their mother's womb.
Or in a factory, if they are mechanoids.
May I suggest that you show cause first, then effect? the flinch is the effect, and the grab is hte cause. It paints a smother movie in your readers' minds