I am tinking in relation to both puddle theory and baloon theory.
BB not yet proved what would happen to the air inside a balloon when you use a powerful compression to blow it up initially, after a while the compressor is turned down and everything inside is settling down. Is it possible the air inside is still moving quickly during this transition and some galaxies or whatever have bounced of the edge and heading towards the centre, air currents or gravity etc are flinging galaxies off in different directions or circulating around the universe. It is just another ignorant man idea.
The same could be said for the puddle as well but in a 2 dimensional.
As the first post is a simple analogy why not me
So if it has already be said in a theoretical mathmatician language then please excuse me.