Sporg (noun): non-vertical icicles. This phenomenon develops when icicles form at the edge of a slippery roof. Snow that is slowly sliding off melts at the edge and as subsequent melting happens, the icicles rotate about the edge until they break off. I call Balderdash!

icicles hanging at about 30 degrees from vertical. other snow and ice is curling off the edge of a roof on a building with dark grey trim. there is a fruit tree in the background and snow covering the ground