Read in the talk -- it says that view state is restored to the controls in the Init part of the life cycle. So what you do is: do all your work over here when you do want view state to override your changes. For example, you have the following code (in pseudo form):
protected override void OnInit(EventArgs e) {
data bind to datagrid
add data grid to control
base.OnInit(e);
}
-- Justin Lovell