This is a Harrison Barnes blog right up until the point LeBron James makes sure it’s not. Advertisement It was a very weird scene in Dallas Wednesday night, as Barnes was seemingly playing just a regular old basketball game right up until he was taken out with 3:11 left in the third quarter. News broke soon after that that Barnes was on his way to Sacramento—the exceedingly rare mid-game trade. Barnes is going to the Kings for Zach Randolph and Justin Jackson, better known as expiring contracts. The move gives back Dallas a chunk of cap flexibility it surrendered in acquiring Kristaps Porzingis last week, while in Barnes the Kings have seriously upgraded both size and shooting at small forward. (Iman Shumpert had been starting there, until he was moved in a separate three-way deal on Wednesday.) Barnes, 26, has a $25 million player option next season, and the Kings report According to Barnes’s agent, he knew a trade could be in the works but he elected to play. Once the trade was finalized, he watched the rest of the game from the bench. “He’s a better man than me, for sure,” said Dirk Nowitzki. “Everybody else would have bounced….