[FiberSynk]

Well a slight correction would be to say that amino acids can be convereted into glucose faster than fat, but fat is still the body's perfered energy source after of course glucose and glycogen, had it not be we wouldnt exercise to lose fat we would loose 100% muscle. Thats why the best fat burning workouts are semi long duration low to moderate intensity. Yeah, if you were to fast for 24 hours and do some serious wind sprints your body would probably begin to break down existing amio acids, but remember it will use whats in the blood before the muscle, and if you are eating enough protein and getting proper vitamins you have at least 24 hours of amino's before your body begins to canabalize otherwise hikier, bikers and marathoners would look like concentration camp victims (I know some do, but ive seen some beefy triatheletes when I was in the millitary) .

Anyways everything you have said makes sense of course, but I think you are looking at it from a somewhat over-technical standpoint. You are attempting to provide a post-action solution to something that needs to be 100% prevenative. See what I would advise is this, if it takes you 16 weeks to diet down and you are a serious BB, one of three things needs to happen.
1> you get a better diet and cardio routine.
2> you maitain lower BF levels throughout the year making everything more managable.
3> you pick a different hobby.
THe mood swings is 100% involuntary and cannot be confused with dangerous dieting techniques which are voluntary, in calorie deficite healthy or not you are going to be pissy with yoyoing insuling and amino spikes all day and not sleeping well because of a lower dietary fat intake, but these are not execuses to do more damage that what BB does already to a healthy person or to go on an indulgence bing. Basically if a person feels the need to reward themselves with a decadent bing eat every 2 weeks to maintain momentum or forward proggress they need to rethink their motivations or hobbies. I am not saying someone should or should not do this, what I am saying is that it is in no way logically neccesary and is just setting one back in the long run.