I think this is going to hurt CampBX much more than it will Dwolla, and it for Bitcoin it is only a matter of wounded pride. Now the only way to get money to them is by using postal mail via money orders or personal checks. No wire transfers, no ACH.
Actually CampBX says you can use wire/ACH now. See their recent facebook update, or tldr: "Dwolla deposits to CampBX will end Oct 15 and Dwolla withdrawals from CampBX will end Oct 28. Please use money orders and ACH for your trading needs on CampBX."
https://www.facebook.com/CampBX?hc_location=timeline