I thought the Warrior diet was pretty widely regarded as being a bad idea.
Are you saying that eating instinctively for you is eating once a day in the evenings? That doesn't seem like a very instinctive thing to do, the instinctive thing to do would be to eat when you are hungry, until you reach satiety, then not eat again until you are hungry again. For many this would be much more frequent than once a day.
And isn't eating apple sauce and protein powder a meal? so you actually have more than one meal a day.
It seems that you eat a little for breakfast and through the day then have a big chowdown at night. Isn't that just the same as the standard miss breakfast, grab a snack from the vending machine and have a big dinner that most of the "average" western world follows?
Seems to me that these extreme types of diet (and to some extent training - see HIT) only work well when you make modifications to bring them back towards the mid-point.
How's that constipation working out for ya?