Mike-
I don't know a whole lot about the Weiss murder, but he apparently had a lot of shady mob connections and likely rubbed someone the wrong way for his gambling debts etc. He was apparently murdered a few days after the meeting with Buss. In the show they try to make it look as though the mob wanted to keep Tark at UNLV for some reason. And the Weiss murder was a message for Tark not to take the Lakers job, but there doesn't appear to be any basis for that in fact. The timing was just a coincidence.
The actor playing Jerry West is really stealing this show. West is a unique looking guy and he is a dead ringer. When I was a kid, I went to a Lakers game in DC when West was coaching. I took his old basketball card. Before the game I saw him walking up the aisle through the stands for some unknown reason and chased him down to get his autograph. I also got Norm Nixon's autograph before the game. Going way back in my Lakers' lore, I remember they had a surfer type guy with blonde hair named Don Ford. His sister was at USC when I was there. The Lakers traded him for the draft pick that ended up being James Worthy. Ford married Sharon Tate's sister. That would make for a great addition to the Kevin Bacon game as it links me to Charles Manson by a few degrees of separation.