Dwolla won't help you. Contact CampBX and have them undo the withdrawl.
Fortunately, I didn't go through with the withdrawal when I saw the warning message around October 20; I've just been patiently waiting since then for Dwolla to get fixed so I could do my withdrawal. But since CampBx had the message up about the bug in Dwolla affecting withdrawals from October 18 up until yesterday, and was still listing Dwolla as a withdrawal option on their website as late as yesterday (the 29th), I hoped that maybe they were going to fix the bug affecting Dwolla withdrawals and then give people a day or two to do their withdrawals before cutting off Dwolla service, since we lost what were supposed to be our last 10 days to withdraw via Dwolla. But now I just logged into CampBx, and see they no longer even list Dwolla as a withdrawal option. So I guess they went straight from displaying the message "Dwolla is having a bug, you should wait fot them to fix it" to just removing Dwolla completely.