The decision to allow the DRC back in is not Stephen's to make either in Caucus or on National Council. It would require a majority vote of either/both bodies, because neither could make the decision for the other.
Regarding the terms of the amnesty -- did Stephen say what they would have to commit to in order to be "eligible" to return?
As far as I can determine, the DRC have no interest in returning if either Stock or Stephen are elected. I suspect Stephen knows this. There are some some of our grassroots members, however, who still sincerely believe that this was all about Stock. They are convinced that he must have done something really awful for people of Deb Grey's calibre to have left. They would want the "new" leader to give them an opportunity to return and if Stephen didn't this would cause more hard feelings.
If STephen is elected and does offers them one last opportunity to return and they refuse, maybe we will ALL conclude that this was not about Stock after at all. If so, then we can finally get on with building the party as we must.
Just something to think about!