I'm already feeling really impatient for tonight's episode.
I still think Fred will have survived, mostly because I think they (the programme makers) still need him in the middle of Serena and June.
He's slimy enough to slither his way out of this at a great advantage anyway, but Serena wanted June out of the house and Fred said no, then he did that whole creepy thing last week claiming he was keeping the peace between them.
Serena would be out of control if she were alone with June and the logical outcome would be to send her away until the baby was born if Fred were killed, that's if she gets to keep the baby at all.
But I don't think the producers would want that as a lot of the tension and drama comes from the two women being forced together. They need Fred for that.