The VR is adjusting at about 1/500s rate. When you are shooting above that such as 1/800, the VR actually make your picture blur.
Also, the 70-200mm is a great lens but it is not that great at 200mm.
So,you capture many great moments but most of these photos are not sharp. Almost like you have a teleconvertor on.
Since you could afford a D3, it will be good to get a 220, 328 or 428.
Good luck.