Michael would appreciate the gesture if he noticed it. At the moment, he's wishing he felt he could bring more firepower to bear on the departing dropship without risking the sort of overwhelming response Gordon told him is not a desirable outcome. He hits it amidships in a way he hopes will slow it down, but he's using most of his firepower to protect the team. Also, he's deciding that throwing fireballs takes too much time; some of the Elites are now executing good ol' opcode HCF just from him looking sternly at them.