I'm not sure it's possible, but since the full guild roster comes up in the same window and contains the full details of EVERY member of your guild regardless of them being online or not, would it be possible to strip that information and then upload your entire guild roster?
The next update to CensusPlus will have this capability =)
The biggest problem with that is that you cannot get the race information from the guild info, only the class, so I'm still working out the best way to handle that.
