Hmm my friend has this same issue but it is on his Asiatic Lilies and not the orienpets or orientals....... Can you get rid of it once it starts??
or do you just dig up the infected bulbs........
or cut them right now and let the bulb sit until next year........??
not sure he wants this spreading through the rest of the lilies in his bed there..
we also had a warm spring followed by tons of frost after that...