you can get a large flat tip screw driver and put underneath the pin. Also you can push on the outer ridge of the pin and pull out the center pin. Lastly if you can put your fingers underneath the whole panel. Grab around the plastic pins and pull the pin out with the panel. Good Luck!!!
P.S. One good thing about the pin rivets is that you can buy them at O'reilly's,Pepboys,Autozone,ect.ect.