>Call the Click() event of your close button from QueryUnload() of your form and the Click() event of your close button should look something like this...
>

 *-- cmdClose.Click()
>thisform.oReindex = .null.
>RELEASE THISFORM

It's probably just a matter of style, but I would try to put this code in a
custom form method, and call it from both the Click event and the QueryUnload.