All that's showing is that ATT want his Snyder Cut released, it's not proof they're giving him control back over the DCEU. It's also a sunk cost fallacy, the money involved isn't just the money they just gave him to do his cut Justice League's costs also include the production of the Whedon movie, which he build up before leaving. Snyder's DCEU is over, that's why he's doing director's cuts rather than making a movie for the DCEU.
Did you guys see the last episode of the mandalorean?