I don't know about that. Throughout this thing it looked like owners didn't mind losing the season, but now they come up with this proposal and a rushed 72 game season, which to me means they'll try to cram as many games as they can in whatever time they can salvage.
I would suspect that if the union does not accept this proposal, they'll cancel December, including the Christmas games. And they'll be right back to the negotiating table, despite Stern's rhetoric to the contrary.
Don't forget that in 1999 the agreement didn't pan out until January. And once an agreement is in place, there's no reason not to try to get some money coming in.
Even if the union gets the votes to decertify, then there's another 45 days or so to keep churning at it. I don't think "disclaimer of interest" will pan out, tbh. I'm sure agents will push for it, but there has to be some major discontent from the players to force Hunter into it.