Soulone,
You could apply the blank template to that particular slide. Select the
slide, in the design template taskpane click on the arrow next to the blank
template and choose apply to selected slides.
Another way would be to rightclick on your slide, select Background, then
click on the arrow and select the white color box or another color if you
like, then check the "Omit graphics from background" checkbox in case you
have graphics on your master. Finally click "Apply" and not "Apply to all"
of course.
Luc