I find Sully to be a bit of an enigma. Part of the time I say to myself, this guy stinks. Why is he taking all these ill-advised 3 pointers... he's gotta go. Then, other times I see him grabbing rebound after rebound and/or successfully defending centers 6-7 inches taller than himself. (I would not have said that last season.) And, I say, wow...he's one of the most valuable players on the team.
As for his weight problems I have some sympathy. I used to think controlling one's weight was easy. And, that it was simply a matter of burning off more calories than one consumes. Then (years ago), I did some research on the topic and found that it's far more complicated for some people to lose weight than I had ever imagined.
Realistically, there are a lot of variables that come into play that make it extremely difficult for some people to lose weight and to keep it off. I am afraid Sully may be one them. Some factors could be;
1. he's physically predisposed to gaining weight (for instance, more fat cells than the average person. You are stuck with these cells for life.)
2. researchers have found that the nervous system and the digestive system are linked together. Thus, he may be getting more impulses to eat even when he is full.
3. the psychological aspect of this problem can be monumental to overcome...anxiety, fears, emotional attachment to food, childhood trauma, etc.
4. His metabolism may be low. (Contrary to this, my metabolic rate is quite high. The average person would gain weight on the amount of daily calories I consume. I have trouble keeping weight on.)
5. Yes, I know he could or does hire trainers and/or dietitians. However, they will only take you so far. He still have to deal with psychological issues, physical predisposition to weight gain and who knows what else.
I am not saying that Sully's weight isn't an issue. It's just that the cure isn't as simple as having an "attitude" change. It's likely there are physical and psychological factors he's struggling against that almost none of us would find easy to overcome even with support.