Brody is always at his best when he's in Shane's orbit, and out of Jessica's. They should have kept him as Shane's father, I have a feeling Jack wouldn't have been half as quick to mess with him (and that Brody would have raised Shane to have bigger balls when it comes to sticking up for himself.)

Rex is SUCH a wuss. No wonder Shane's a mess when he has a Dad has a maturity level about the same as his own. Jack might not even have messed with Shane if Brody was his Dad. I still wonder if Jack is getting back at Rex for Rex's crimes.

TPTB messed Brody up when they turned him into a mindless stooge of John's . John is the Grim Reaper - everyone who comes into his orbit is left worse off, with their character destroyed and left no longer recognizable.