It's not likely there was a conspiracy of sexual assault accusers working with the WaPo reporters to help minority owners, so that investigation had to be ongoing, long, and independent. Nor is it likely the minority owners wanted out of a valuable enterprise just because Snyder's a jerk, or just because of a little bad publicity over the name in the offseason because they'd been through many rounds of that.
Sponsors had also held on for years even through lawsuits. IIRC there was little pressure on Snyder to change the name until maybe right before the sponsor announcement, if that. So something else was going on behind the scenes and it appears it was the WaPo article.
What probably happened is the minority owners knew about the culture and found out former employees were talking to the press. Snyder had to know, too, well before BLM. This probably caused internal divisions to become magnified and there was fear the owners would lose value or even face criminal indictments.
Let's say Snyder starts looking around for ways to make it all go away including buying out the minority owners, who by now are pressuring Snyder and attacking him via the media and courts. Name change options are considered but not settled on as a possible negotiation piece. The minority owners know this is going to blow up in Snyder's face so they perceive leverage and press the advantage.
Then Floyd happens and the heat is really on. Snyder's team find out the WaPo story is about to break, and it's a poorly kept secret so in early July 2020 the sponsors use the chance to pounce. This further weakens Snyder's position with the minority owners, who are now also facing lost value they might pin on him, and he seems f***ed.
WaPo editors see this and begin planning a launch date for their report. Snyder is tipped off. He's got to do something before the NFL takes drastic action against him. Snyder's team announces a "review" of the name on July 3rd.
Then Snyder starts firing people implicated by the WaPo article just days before the article release, showing he was fully aware of the article and many of the details. This strongly suggests a leak which supports the tip-off theory. The next day the name change is announced.
A few days later the WaPo story breaks and people are still calling for Snyder to be thrown out of the league. His name change gambit seems to have failed, as the public and media perceive weakness in his defenses rather than "reform".
Over the next week, to reclaim momentum and provide distraction, Snyder's team quickly scrambles through their name change options and uniform logistics from previous sessions. They cobble together the basic WFT outfit and logos. By capitulating they're essentially begging the NFL for mercy in any ruling due to the fallout from the WaPo article, while also avoiding further mascot controversy in case there are ownership negotiations.
A year later the NFL lets Snyder off the hook in exchange for Snyder doing his performative mea culpa by "stepping down" behind his puppet administrators, including his wife.
IMO this is probably close to how it happened. The main questions in my mind are whether there was an implicit or explicit deal between Snyder and the NFL, and whether that was struck before the name change announcement or afterward. IOW did he just thrown himself at the mercy of the court or was there some quid pro quo....