Passing to an open Kyle Korver for 3 while you're up 2 wasn't the issue...
The issue was letting KD drain a 3 in his face (playing on his heels/too much space) and instead of coming right back at him he let Kyrie do whatever the fukk he was doing and blow their chance to take the lead.
LeBron should have have came right back down to score and take the lead. Instead he deferred to Kyrie and it cost them.
Maybe KD is better...