I note from the recent Unite communication that the latest BA offer, which has no compromise on either ST or disciplinaries, will be put to the vote of their members.
Given the percentages that went to work during the strike, it appears likely to me that the vote will be to accept the deal.
If the vote does go that way, then the mandate to the Union from their members will be to accept the loss of ST and the continuance of disciplinary action. They could then choose to either abandon attempts to return ST/cancel disciplinaries, or ignore their members wishes. Not an easy choice.
Unite/BASSA seem to be digging their way ever deeper into their hole.