Yep, those rivets are reusable.
To remove, push the center pin down about 1/8" below the rivet head height and the rivet will release.
To install, push the center pin out of the rivet body toward the direction of the rivet head (it will not continue down through the rivet body). Make sure the rivet petals are collapsed and install the rivet body, followed by installing the rivet pin until it is flush with the rivet head.
Some people just pull the rivet pin out of the body until it is about 1/8" above the rivet head (but still in the rivet) but I have not always been successful with that- removing the pin entirely makes reassembly easy.
Brian
a quick scan of Fred's video for removal, and that was an easy install.
Is there an easy way of re-popping those push rivets? I got it from the backside, but felt like I was going to pierce my fingertip....