When I spoke with Brendhan last night, his idea was to try and save the genetics. Without brood nor the queen, this hive's genetics will not live on.
Placing the nuc and having the queen move up and laying in the nuc is the best way to go here, if indeed she does move up, which I suppose she very well may. If she does, even if he doesn't get her at least he has brood and eggs and they can make a new queen from that.
...JP