Jump Trading fixed the problem by depositing $320M ETH tokens into the Wormhole's ETH account to ensure the falsely issued wETH tokens are backed. The fake Solana tokens released from the fake wETH were deposited back into Wormhole's Solana account. They are still in Wormhole's Solana account after the re-capitalization. It's basically they're using the $320M ETH tokens to buy a bunch of Solana tokens, created by the hackers.
So at the end, they're not really out of $320M money; they still have the $320M Solana tokens, fake or not. It's just the general public got screwed by having $320M of Solana tokens inflated up on them.