No, didn't forget LMA. I think Kawhi viewed himself as a Jordan type of player and wanted a Pippen.
I really do think that resigning Mills to that overpaid contract and Gasol didn't sit well. I'm not saying that is the total reason, or even close to it, but I do think the seeds of doubt started there for Kawhi (even if it was only like a 10% chance at that point), and his uncle probably took it way over to the other side. I agree about his uncle having that big of an influence. As for LMA, what am I basing that he wanted a wing, well, just take a look at the player he picked to play with in the Clippers (Paul George). I think Kawhi wanted a wing/guard as his running mate, not LMA. I completely forgot until just now, but I do recall someone saying that Kawhi wanted the Spurs to try and get Paul George before he was traded to OKC. Not sure how true that is, but if true, it reinforces what I thought about him wanting a wing/guard as his sort of version of Jordan/Pippen.
I still don't know why the Spurs passed up Jimmy Butler if he was the guy they wanted if they missed out on Kawhi. Doesn't make sense. They could have started Jimmy eventually and moved Danny to the bench as a super 3 & D player. Manu and him could have come in a kept the pressure up for 48 minutes. They could have easily found a backup PG for cheap if they really needed one instead of drafting Cojo IMO (thanks for game 6 2014 WCF, though, Corey).