Complex sentence: Will, aware that Harland's men are also following him, uses the Fat Tuesday celebration to escape, purchase a second cell phone to redirect calls from the first to, and then plants the first phone on a leaving train to throw Vincent's tracking off.
Split into simpler sentences: Will, aware that Harland's men are also following him, uses the Fat Tuesday celebration to escape. He purchases a second cell phone to redirect calls from the first, then plants the first phone on a leaving train to throw Vincent's tracking off.