Does this clear ViewState?

In asp.net 2.0, I load a user control dynamically using LoadControl().  The user can do postbacks in this control.  I use ViewState[] to keep track of several variables.   At some point, the aspx page will Remove() the user control and completely unload it.  Does this clear out the ViewState[] variables used by the user control?  If not, what is the best way to clear it?

Thanks,
brettr