Well I have done it many times and have not had one snap on me. BUT I guess if one has, then another one could. However, you won't be in a worse position. When opening up the link (the 2nd one from the end), slip a razor blade in between the folded ends and the lift slightly. Once slightly lifted use a thicker blade to push the "flap" up. Bear in mind this does NOT need to be opened all up to 90 degrees, a bit less than 45 degrees will do it (or there abouts). Basically don't bend the fold up further than you have to. Ease out the bar of the broken link, and then ease in the bar of the next good link. Then get something flat and wide to push the link fold back down again.