A good quality sausage should not need anything doing to it, apart from putting in the frying pan, if that's how you cook them. The only reason a sausage will turn into a potential firework is because of the poor content. High content of water is the main reason sausage bursts in the pan, and a large percentage of gristle, the gristle content is through poor cuts of meat. Also the skins that contain the so called meat are now , most times artificial casings.
If you add cold water to hot fat, you will get a mini explosion, that's what your seeing when water finds its way out of the meat in the hot pan.