I think that they may have no point to close the registration soon if in the future it is reopened, either close it for good or leave it open. In fact, closing it now wouls be good to prevent sockpuppet. Reopen the registration later could permit to prepare sockpuppet for the next registration (Unless the rules for the registration are strickly the same as now, even that might not be good enough imho as it would not prevent more sockpuppet from joining...)