Thanks for everyones feedback and assistance so far.
So heres the update:
AD gave me a call and i got my spacemaster back today, it was actually ready a week ago, but I was unable to pick it up. Thats a 3 week turn around time, taking the Xmas/NY break into consideration, so not to bad from the service center (SC).
Okay; turns out that there was no seawater in the watch, so the crown must have been fully in when i took it for a swim.
The AD reported that the SC replaced the rotor pin/screw? I asked the AD if the SC explained why/how the component could have been broken? If it was a case of a faulty factory part, ok, thats out of my control. But if it was a bump or knock I probably need to be more careful. The AD said that the SC did not provide any feedback on why it might have broken. Not sure if he was being evasive or he just wouldnt know.
The dilema i have is that i cant remember having a serious (or any) knock on the watch. Given Balls reputation, i would expect it would require a pretty hard knock, which should have left some signs, to cause this kind of damage? The watch is still pristine with barely a scuff mark on it.
So now i am worried about any slight bump causing a similar problem?
Happy to get any advice, feedback from more enlightened folks