Originally Posted by Freakin
if ever a situation called for an "upper decker" this is it.
Actually no, that would only hurt the original owners as it appears the new "owners" are just trying to get a free property to stay it.
OP just move your stuff back in and stay there, try to work out a deal with the original (current) owners to extend the lease.
If somehow the sale goes through (sounds very unlikely now) then yes, upper deckers before you leave, and a random night-trip once a month or so to disconnect their power and water!