Throwing a tantrum and throwing out the guy that yelled "get in the bunker" at the playoff hole of the Honda Classic last year after his swing. Not that I think anyone needs to be or should be yelling at the pga event but it wasn't his place to get involved in. That's something that student athletes are protected from, not professionals.
Also don't know too many other independent contractors whose regulating bodies have to reach out to them on twitter regarding their passive aggressive behavior.
https://www.golf.com/news/2019/03/02/usga-responds-to-justin-thomas-tweets/
But that's just who JT is, and I can accept him for that. He's been competing at an elite level since he was like 12, I wouldn't expect him or Speith to be "normal, down to earth guys". Its a by product of your success. But when you have a PR team that works to sell you as Mr Nice Guy, yet nobody you work with ever refers to you as that, you are trying to sell me a faberge for $19.99 and nobody should ever want that product.
At least he's getting his money's worth if anyone buys that snake oil video of Kuch with arm around Sergio in golf cart today saying it was all good. I'm sure Serg will be wearing a pair of those comfortable as heck sketchers at the Masters too.