While I'm very happy it has worked for you, and I agree that losing weight, exercising and eating correctly will help a Diabetic, it will not cure them. Diabetes is always there waiting to reappear.
I belong to several Diabetic sites and none of them recommend the Vegan approach, and it can be dangerous for a diabetic. The best place to start is to control your carbs, that will reduce blood sugar spikes.
I would love to end the continual finger sticks (checking blood sugar levels) and the mulitple shots of insulin a day, but for now that is the life of a diabetic.