Wouter, it was probably deformed by the shock loads from landing, coming off all the big waves you guys get up there. You were lucky it did deform and not just go SNAP! When I got my new Bimare Jav 2 some years ago, I found the shackles were very light compared to what I was used to, I had to replace many of them within 6mo. as they were starting to bend too...and I don't ever sail in big waves!