The Hollywood superstar, who has been such a big advocate of post-Katrina New Orleans that there's been talk of a mayoral run, said he would consider the death penalty for the people responsible for the leak.
Pitt, 46, has led the "Make it Right" project to build 150 affordable homes in one of the areas of New Orleans hit hard by the 2005 hurricane. But it was the Gulf Coast's latest disaster that sparked Pitt's ire.
The documentary was initially going to end on a triumphant note, with the hometown Saints winning the Super Bowl. But when the Deepwater Horizon oil rig exploded in April, killing eleven workers and spewing 180 million gallons of oil into the ocean Lee went with it.
"This would have been a much more upbeat documentary for sure," Lee said.