I didn't see it live, but read in the paper this morning that Garnett turned to the crowd, not towards Unfrozen Caveman Pachulia, and made the throat slash gesture while saying "It's all over".
I echo others' sentiments that levying fines for things of this nature is really taking a lot of the passion and excitement from the NBA, but I also see no difference between something like this and Mutombo waving his finger at the crowd after making a block. This it the NBA, it's meant for entertainment. This stuff really doesn't matter in the grand scheme of things, it's not like this is Barack Obama making a throat slash gesture towards Clinton after winning a primary or something. Can't we all just get past this high-horse garbage and let these guys entertain us without ACTIVELY looking for something to get all up in arms about?
Jeez.