I doubt the buyer would do that with this piece. It's too expensive and one-of-a-kind to stash away. If you're buying artwork just as an investment to stash away, you'd probably buy many much smaller pieces rather than a headline grabbing one.

I'd bet that this will be hanging in someone's billionaire's living room somewhere (hopefully behind some protective glass). These guys have egos. Saying you own the most expensive piece of artwork ever gets you something that money can't buy (even though you did buy it).