You know what happens when you send Ether to a incorrect Ethereum address? The wallet will reject sending it. If you bypass the wallet and rewrite your own wallet to send it anyways, the validators reading from the mempool will reject it. If you rewrite your own validator to accept it anyways, no other validator will accept it and the transfer will never go through.

What happened here is more like you used IBAN to send to the correct account, the correct bank and everything was correct, but no one actually has access to the account but the bank doesn't know this.

Nothing has vanished or been removed.