If Bretton Woods 2 occurs, the short answer is "no." First, the central banks still have a great deal of gold, despite their sales. Second, the weaker banks may buy gold. But what is the supply elasticity? If many people believe that inflation will be lower and that the future price of gold need not rise much, they will be more willing to sell now. There are some large stores of privately held gold and it might flow back to the central banks. (They sold at lower price and the speculators bought it at $260 and on up. The speculators would profit and the banks lose, but gold prices need not rise much if at all.)

In speculative markets, prices are set by the marginal transactions based on expectations. Very large amounts usually can be bought and sold at prices near current prices. Even if central banks bought 50 tons, they would not impact prices much if they took their time buying because people know that their purchases are not based on any special information about gold. The same goes for their selling of gold. They sold it slowly and they had no inside information. They did not depress the price of gold after the initial surprise news of their future sales was made known. It moved on other factors such as depreciating currencies.