MABS will not be a lot of use in this case as what OP wants to do is concentrate on CC debt, MABS would advise paying debts pro rata to income which may not give the solution needed.
Could you maybe go interest only for 6 months or get a mortgage break to enable you pay down the credit card? Might not work if you are in negative equity though.
You will mess up your credit rating but maybe this doesn't matter, if not then I would do as one poster suggested and pay token amount while throwing all available money at credit card bill. Nothing serious will happen for 3 months or so anyway.
Ideally you would get bank agreement to reduce mortgage repayments, same with credit union and loans and concentrate on credit card, they may agree to this as it is a sensible solution, worth asking, if they don't then just do it anyway.