Even though you can't buy a spot now that all headquarters are taken, it was an unforeseen link (http://www.barafranca.com/createfamily.php?hq=88, the number should correspond with the next available family) that allowed Xenothebe to start a family. It's unlikely that admins forgot to make this impossible to occur, but that it just never crossed their minds that this was possible.

Messina's new Don quickly went to admins, as this was probably only done to see if it was possible - and it was - and the family will be brought down by admins as soon as they get back into office on Monday morning.