At very least we needed to adjust coverages so they didn't know exactly what was coming. Going under would have been a solid option with how they were playing.
Going under would be the same result, a pull up 3 by Lillard. Really hard to go under on a high screen against a player like that because you can't give him any space at any time so when the screen is called out, it's nearly impossible to go under and recover to contest any shot.