How can you remove a minifig from its key chain?
There is also a third method, using a cheap and readily available soldering-iron. The benefit is that it is a much faster and more reliable method than trying to pull the pin out by sheer force, which may or may not work depending on how strong you are. With a soldering-iron the pin just pulls out within a couple of seconds, no force required. See tutorial and video here: http://thebrickblogger.com/2011/01/lego-keychain-removal/