Well, I was wrong about the 2 queen thing. I removed the queen on thursday evening. I went to check for Q cell acceptance on sunday evening. That's a period of 72 hours, so the eggs I was seeing must still have bee unhatched eggs from Thursday. When I checked the hive today (6 days after removing the queen) I could not find the queen. I find it strange that they did not make a single queen cell.
I took a frame from the Nuc, notched a few likely candidates and put it in the parent hive. Hopefully they feel like re-queening this time.