it isn't St. George who slays the dragon. If you look at his hand, you will notice that he isn't really holding the spear, just touching it lightly. This expresses what we mean by synergy.
Coniaris reads the Orthodox icon of St George as a visual theological argument: the lightly-touched spear signifies that victory over evil is not the hero's own achievement but the fruit of divine-human synergy.
, Philokalia: The Bible of Orthodox Spirituality, 1998thesis