Yeah, but don't forget that he helped out Molly in an effort to earn his way out of where he is, only to accept he belongs there.
Now, he could still be a backstabbing creep. Or maybe being dead and getting some perspective has slapped some sense into him. There's no way the kids would WANT him back, no matter what he said, but it'd be a great wrench to throw into their lives.
I hope he doesn't TOTALLY redeem himself though. I hate it when someone is redeemed and suddenly is sweetness and light. He can be a creep without being a murderous creep. Kinda like, "You're a nasty sonova bitch, but you're not ALL bad."