This story contains zero information.
Like BurtW proved above, the coins are not "on the move." They are sitting where they've been sitting since the seizure and not a single satoshi has been withdrawn.
The words "faith" and "managing volatility" are nonsense as well. The FBI will follow established procedures and sell the coins at auction, regardless of whether or not they have "faith" in the seized good, and regardless of the "volatility" of its market price.
Unfortunately btc community is full of scared mice and the cats love to mess around. Just 2 days ago they were pumping (fake facebook adoption) and today dumping (FBI sale). You people should get used to it and calm down.
As far as the procedures go they may take years and the new buyer might just be a hodler. Ever seen an evidence storage? You'd probably find Al Capone's money in there.