Hi folks. Need some assistance with my Corum as it is "sick"

I have a less than 1 year old Corum Admiral's Cup 44 and have worn it consistently since getting it (at least 3 days a week). However, I have not worn it at all for the past week and left it in my watch winder (because .... of a new wife). When I had a look at it this morning, the seconds hand had stopped moving even though the watch winder was turning!
What could be the problem? Could it be that it is too heavy for the watch winder (i.e. watch winder does not wind the watch)? Or is it is not meant to be put into a watch winder? Or is the watch winder is supposed to go in one particular direction? Or at particular RPM? Or could it be a problem with the watch itself?

Any thoughts and suggestions would be greatly appreciated. I would consult the manual but arghhh ... I have misplaced it.

Thanks in advance.