I've maintained a few things consistently: That beer is best served cold, that Godfather II is the best film ever made, and that Kyle Lowry was a different player after the Brooks trade, and he was allowed to play big, starters minutes and run the show how he sees fit.
The thing is, though, Lowry was the starter before the Brooks trade, too. He started 49 of 53 games before the all-star break, and averaged 12/6/4 in 33+ minutes. I'd understand your argument if Lowry wasn't a starter, but all of a sudden he was post-trade and saw a sharp increase in minutes. That's not what happened at all, though.
My personal guess is that Lowry just got hot for a month. He averaged around 13 ppg in December, January, and February. In March, he suddenly shot up to around 19 ppg, before falling back down to 13 ppg in April.
Your theory is what, that Lowry performed better after Brooks was traded because he couldn't stand looking over his shoulder? I mean, he was already a starter, and his minutes didn't go up much, so it must have been a mental thing, right? If that's the case, that's a clear sign of a mentally weak player, isn't it? And if that's the case, do you truly think he's going to excel in the high-pressure environment of the NBA Finals?