Dallas Maverick fans are still pissed about Luka Doncic getting traded to the Lakers ... but Mark Cuban is reiterating he had NOTHING to do with it -- claiming he was promised he'd maintain control of basketball operations when he sold the team, but that didn't happen.
Cuban -- who has a net worth of $5.7 billion -- took time to respond to a fan on Facebook who said he should be "run out of Dallas" as a result of the shocking transaction .