I'd say the shakes are fine, the protein component at least. It's just that level of carbs won't be necessary unless there's a serious amount of daily activity involved.
AiiR, you probably have low insulin sensitivity as a result of bad long-term diet. Don't worry, it's something 95% of the UK population has too. When we eat lots of carbs, these get broken down into glucose and enter the bloodstream, we must then secrete insulin which acts to remove this from our blood as too much can have quite significant consequences. The more often you eat carbs, particularly in high amounts, the more insulin you must secrete to keep your blood sugar levels normal. It's all this excess insulin that causes fat gain.
Reducing carb intake reduces insulin spikes as it's required less to remove glucose from your blood. Furthermore, your body becomes more sensitive to insulin (a good thing) so you have to secrete less of it to remove that glucose from your blood.
So if I'm understanding you correctly, reducing my carb intake 'should' equate to better results than I'm seeing now? Or atleast play a part in helping?