Oof, always some bad with some good, and vice versa then really!

Arm bones, or leg bones?

And yea, I think there is karma sometimes, but as a good friend mentioned, another word that could be used is coincidental.

Its Sods law for the selling: if you wait and it decreases then you'd wish you sold it earlier, if you don't and see it goes for more later - rip out hair moment. I would say the xmas timing is a good idea, but ask yourself, if you wait can you deal with having less money from it?
I have a feeling it will blow over and the hype (and price tags) will go. Maybe wait a month?