Muffinsmummy - your ExH sounds like a knob - don't let him make you feel like crap. Easier said that done, I know but his bad behaviour is no reflection on you as a person. You will get through it but if you want to off load we are here any time to hurl abuse at your ex listen and sympathise.
Hats off to you for doing the Shred - I have looked at it on Amazon and it sounds terrifying!
FAB - sorry to hear you are struggling but I am in awe of the rowing.
Solo - 
How much of a disaster? I hope it isn't too bad and no more than AF messing about. You have done so well so far - it won't be all wiped out.
Alibaba - be kind to yourself. Your baby is still very young and you have to do whatever it you have to do to keep up with his feeding demands. It will get easier.
I'm struggling too. I am OK all day but the evenings are awful. I just roam the house looking for things to eat. 
It goes back to what I said the other day about being bored with thinking about it. I spend all day wondering if I am hungry and whether or not I should eat but by the end of the day, I am tired end up just thinking sod it, I don't know or care any more. Any good I might have done during the day gets wiped out.
I am also thinking that it isn't enough to eat whatever you feel like when you are hungry at the moment because that leads to bad choices. I do actually need to think more about what I am eating and its nutritional content. I can't pretend that calories don't matter so long as you stop when you are full. At the moment this isn't retraining my eating because I am not eating better even if I am eating less (for some of the day anyway) and when I do slip up and overeat, I am compounding the error by overeating the wrong things.
I think I need to get better at going to bed too - I go to bed much much too late. That isn't helping in so many ways.
But Bossh and FAB are right - we can do it, it is just a bit tough at the moment.