It didn't seem to planned, I didn't see Nicole or Gina packing, nor read that anybody mentioned it either (Haven't everything here the last day).
But there has been a time or two when all have been leaving at the same time. Sara and White at B1, it the only time I remember in Barcelona (Was thrown out for being out most of the time, and I don't think Nora was there at that time.
Other than that I only remember that a few of the couples appartments have been shut down suddenly, like when Taya was asulted by her boyfriend at the time, not Will.