I'm not a Brands apologist by any stretch of the imagination, but this is my feelings on what went down here:
This being the NIL era, I think Mo Endene, an accomplished D3 multi National Champion is given a real shot to be Iowa's starting 197 lber, and they're confident they have their guy for the 2025/26 season. And they clearly did, as it was playing out in the early going.
But they aren't paying him Jacori Teemer or Kyle Parco money, nor should they have. But then, wonder of wonders, he explodes up the rankings to #4 with a great start to the season, solid as hell contributor, but still a small sample size. Likely exceeding anyone's expectations of what they had, possibly including Mo Endene (granted, this young man hasn't tasted defeat often, so he's likely confident, but still not proven at the DI gauntlet level).
So Mo Endene (and maybe his wife with expectant child to boot), think it's time to approach Tom Brands to "rework" his financial package before the 2nd semester starts.
Tom Brands tells him you're doing a great job, but you signed up for what you signed for, for the year and that's what you're getting. (perhaps the funds he's seeking just aren't there, budgeted for, etc. - no idea how it all works, but I bet Tom Brands and good folks like Bob Nicolls do).
So Mo Endene with new baby in tow decides he's not satisfied with that result and starts thinking about his options (which are damn slim IMO), but won't accept what he's been told and now he's pissed (and don't forget Mama, they're a Team too as all the married guys know - especially when it comes to $$$

).
Tom Brands says I'm sorry Big Mo, not gonna happen, we don't or can't operate that way, there is no I in Team, etc. So Thank You for your contributions to the Iowa Wrestling program and we wish you well in your future endeavors.
So now we have a brief word from Tom Brands, then silence from all the involved parties, at this time.... But for me personally, I would be stunned, if this scenario I portrayed isn't real close to what happened. Follow the money, ALWAYS follow the money.