I know I am repeating myself a several others. The issue with George's eligibility is the existance of a current & active forgein club contract. Not is he is registered or contracted with the ARU. If his Suntory contract did not exist the fact that he is playing rugby in Australia, and therefore would be registered with the ARU, would make him available. However, the Suntory contract does exist. The difference with Elsom & Vickerman were that any contracts they had had expired. The difference with Burgess is that his contract will have finished & he is not elligible until then. The issue with Mitchell is that his contract will not have begun so he is elligible until his ARU & Tahs contracts expire either at the end date or through release. Whether or not these 4 players should have or should be selected is an entirely different debate.
On top of this is the fact that George has/had retired, in writing, from international competition. This means that whoever his current club contract is with they have the right not to allow him to play internationally unless he 'unretires' from international competition, in writing. Now I am guessing from his comments that Suntory has a clause saying that if he wants to play anywhere else, including for the Wallabies, then they must sign off on it. They would be mad if they didn't. He has also stated that he has no intention of breaking his contract with Suntory. Technically the Brumbies will also have to sign off on allowing him to play international rugby.
The concern is not if he is worthy or not, it is that the rules that the ARU have had in place since the 'professionalisation' of rugby mean that he is not elligible and therefore they will need to be broken, bent or rewriten to allow him to play. This, IMO will open up a world of hurt for the ARU. As mentioned before there have been players in the not so distant past, and the getting to distant past, who have wnated to play a season in Japan or Europe as a sabatical and have been encouraged strongly by the ARU not to. Some of those players have stayed, some have told the ARU to stick it.
And for those asking, even if he was signed with an NZ or SA team he would be inelligible.
As an aside I think that the ARU needs to sort their shit out in all contracting. The crap that has been going on for the last 1-2 years is not good for the code and something needs to be clarified.