How does Sticky Fingers' ability work toward Pesci in Golden Wind?


At the final battle of the _Grateful Death arc_ , we could see Buccellati
confronted Pesci and his stand: _Beach Boy_ using _Sticky Fingers_. At the end
of the battle, Buccellati attacked Pesci repeatedly and suddenly Pesci was
ripped apart into pieces. How could this happen? I thought that _Sticky
Fingers_ ability was to make a zipper in an object and could open and close
the zipper so Buccellati could make a hole inside that object.

When he undid _Sticky Fingers'_ ability, the pieces would normally return to
the foe's body, without the body getting ripped apart. But in Pesci's case, it
seems the torn part didn't return back to his main body parts. This is the
scene where [Pesci was ripped apart by _Sticky
Fingers_](https://www.youtube.com/watch?v=lcLJhofe79M)




Pesci could've died due to his injuries, making the zippers useless in putting
his body together in this case. Also, the zippers faded away, so that just
proves my point further. It's the only sensible reason I have for this issue.

