I hope the issue is resolved if there is one.
However, having seen the video; it's just as likely that AF saw TSM enter the brush, or at least saw Ez standing along the top of it.
I'm also skeptical of the ping, as it's the only ping in the entire game, and AF could more easily have spoken to each other and just said something like, "they're going top."
Furthermore, AF's early positioning suggests that they were not capitalizing on ill-gotten knowledge, but rather were completely unaware of TSM's initial movements (spreading themselves across the jungle in a more-or-less standard array.
I like TSM; I think they're a strong team and definitely deserved their spot in the Championship. As a fellow US citizen I'm disappointed that they didn't get further and sympathize with the sentiment that spurs this thread - to an extent. Besides that, if any team did cheat they should be disqualified, or at the very least, the game in which cheating occured should be discounted, requiring any appropriate rematches (which everyone might prefer). But I'm not going to convict AF based on the evidence presented in the Original Post, though further investigation may be warranted.