I think without Sam in the house:
a) it would be a lot more entertaining.
b) the rest of the house would find it harder to bully dexter. Im surprise Dexter has handled sam's bitterness so well.
c) I hate his evil face.
d) Sam wont do anything without someone Backing him up: i.e Twins or Callum
e) he thinks he is all that.
But Sam has tried to get all the housemates behind him so's he can bully and make Dexter feel awful.
GET SAM OUT .