You will need two shots to pass this stage, although it is possible to kill all the pigs with one shot, however it will be pretty hard and you may not have enough scores even if you do.
The two shots are interchangeable. Your goal is pretty much launch into the metal block pile, and blast them away using your jedi power.
Power Activation Point
Activate the power when you get near the pile.
First Shot Result
Similar to the last shot, this time you will aim at the bottom metal pile.
Second Power Activation Point
Blast those blocks away with your jedi power and hope for the best.
Second Shot Result
You will earn your three star mastery title if you have destroyed all the pigs with enough score. Keep on trying if you fail!