They sent a big double team at him if I recall correctly. By the time they swung the ball shot clock was running out.Plus, Lebron is an excellent passer. The triangle works best when the post player can pass. It worked for the Lakers because Shaq was an excellent passer and Lebron is a better passer than Shaq was!!
Not 100% sure what those adjustments were that the Pacers made, but it was like Lebron couldn't even get to the paint to post up last night!!