I just got an email from USQ telling me that the new DBA program requires some residencies. This is a shame because the program was one of the few with no-residence available. It seems that you are required to go for one seminar in Australia and you are recommended to go at least once a year to visit your supervisor. I don't know if the latest will be mandatory but the recommendation is something new that was not part of the catalog before. http://www.usq.edu.au/handbook/current/DBAD.html
I see that USQ have finally launched their Master's in Professional Math/Statistics. Can be done entirely by DL.