Hehe, its a little difficult without diagrams. Your first step is to bring the loop back over the tab. No special tips on how to do this but you should be home free from there.
Be very careful w/ a screwdriver as they can damage the Slink. A rawhide mallet and a few light hits will loosen a Slink or knot making it possible to untie/remove.
True, but Maillon Rapide links can be over-tightened caushing the barrel to crack, they're bulky, if you lose a bumper they can nick the slider grommets, and they're not as strong as Slinks.