Strangely, they don't really need to sell them. They have various tricks involving the gold (certificates) that they hold. They'll revalue the certificates, currently at $42 per ounce (seriously) to a large current value. Then they'll say "look at this massive profit we've earned overnight" and the beancounters will allow them to spend the profit

It's bizarre, and I don't actually think they'll do it. But it's an idea that has been discussed for a while