Disableing photon desk top manager

With my application we use a touch screen so, I start photon using
“export PHPDM_DISABLE=1” and
“export PHWMOPTS=-STW” in the sysinit file.

My under standing was this would start Photon with out the desk top manager
and with out the mouse.

But the mouse pointer is still displayed on the screen, I can move it using
my finger on the touch screen. But can not actually select anything with
it.

I would like to have the mouse pointer completely gone from the photon
screen.

Please advise.