I talked about this in the chat, the main problem for the Jazz wasn't LeBron sagging off Andrei, it was Andrei's reaction to it. Instead of catching the ball on the left wing outside the 3pt-line, AK would catch it 17-feet from the basket - with Jefferson on the left block. He had 2 TO's in the 3rd/4th qtr on this play - as you can't enter the ball into the post from that position, and we couldn't get the ball to Al when he was rolling (19 pts in first half, just 6 in the 2nd).
Even if LeBron sags off, AK still has to catch the ball outside the 3pt-line (on the left wing), because that's how we get into our offense. If he can't enter it to the post, AK would then pass back out-top to Deron, then run down and set a pindown screen for Al who pops out to get the pass at the left elbow as we run our back-screen action on the weakside.
AK just completely deviated from the offense and took us out of rhythm, and didn't even try to guard LeBron on the other end. It's one thing to struggle shooting or not have players guard you - the Jazz's system can deal with that. But if you don't run our offense properly we have no chance - because live-ball TO's in our offense results in us getting killed in transition.