Nonsense. You don't need to have heard the "fix theory" to see Hall is throwing that match. Look at his reactions to his misses. Great pool player? Yes. Good actor? Hell no.
Everyone is free to make up their own mind about this, but check out his reaction after missing the 1 ball in this US Open match against Parica and compare it to any of his misses or scratches in the Lebron match. When he misses the 1 against Parica. There's no stick waving. He just stands there like most players do after a genuine miss and stares at the table for a few seconds.
http://youtu.be/6SfnfsLN4iA?t=16m56s
Also, watch his reaction after each match is over. Against Parica, he's eliminated, but is still guaranteed money. Yet his reaction is all frowns and disappointment. Against Lebron, he's also out, but not guaranteed any money (per the format). Except in this one he's all smiles.