What many people do not know is that you don't have to get out of your banshee and hijack it back. Instead follow these tips:
1. If the enemy lands on your left or right wing, simply do multiple barrol rolls to fling them off. This works the quickest if you can barrel roll that side of your banshee into a building.
2. If the enemy lands on the front or back of the banshee, try doing a backflip multiple times or ramming your banshee head first into a building.