The discussion on the Clinic has just been closed, but I think a good point was raised. I know TeamSkyFans is going to get at me for this...
There's a good reason why SS has left, but there's a lot of coincidence in the timing, and it's also curious that he has left totally and with "immediate effect". I'm sure SS himself understands the timing and knows there will be speculation. Yes it is a personal reason that he's given, and not one that should be ruthlessly picked apart, but there could be more to this.
On the same basis that you don't know who's been cheating just by thinking they're a nice bloke, I think in a situation like this, there's no justification that just because he has a valid and somewhat tricky reason to leave, it doesn't mean there's not more to it....