I'm not saying they will. Vic loses the lawsuit, Toei will likely cut their loses and have someone else voice Broly. However, It's been pointed out numerous times that they forced sabat to cast Vic as Broly. Also, they aren't exceptional and are going to patiently wait for the result of the lawsuit. We've seen signs they aren't happy.
Yes Toei is separate from Funimation... but Toei controls the license for Dragonball Z and Dragonball Z Super and who dubs the shows. And here's the kicker on how we know Toei has Funi whipped. Sabat, who has enough sway to basically control who gets cast as what in most of the shows Funi dubs, wasn't able to make Toei back down from making Vic the voice of broly. If they can do that, then I have no doubts Toei can get Funi to do anything that isn't illegal.