Could do a split, and add the laying queen in the new set up. Let them make a new queen in the old set up.
Now, with Russians you never know what their intentions really are, they have a tendancy to make swarm cells, then tear them down, but then again, they could swarm out as well.
You've given them room, but, if their mind's are made up to swarm, they will.
Splitting the hive up could be your best option, and hey, another colony for you.
By splitting the colony up & adding the laying queen to the split, you could fool them into thinking they've swarmed, a beautiful thing indeed.
...JP