those damn wheelwell splash shield fasteners

[davidpertuz@mindspring.com]

A little earlier I was trying to repalce the windshield washer pump on my
dad's 200SX, but I can't figure out how to get those damn
fasteners out. They have Philips heads
on them, but there's more to it. I
looked in the FSM and it said use a
driver on the p-head and a flatblade
on the female part, but all the combos
of unscrewing and tugging I tried didn't
do anything.

A while ago I took this piece off on my
car, had trouble then too, and
discovered the trick by accident, but I
have no idea what it was.

Can anyone help cure my case of the
stupids?

thanks,
david