This is your fear, fuzz2050, but it doesn't have to be so. Fisrt the man clearly prepared and trained himself so he won't forget to unclip whenever need arises. Secondly the XTR pedals are of extremely good quality and a mechanical fault is very unlikely. Thirdly, there are two kinds of SPD cleats and one allows for unclipping by twisting up, right and left making everything that much easier.