I had the same experiences as you the first time I went out.
2wd, trac all the way off, offroad on, locked and unlocked, couldn't maintain a perfect circle and it would just keep grabbing and then understeer. Gave up on donuts for fear of breakage and went on to full speed runs.
So much more fun than spitting mud everywhere. 60mph drifts through mud and water with your friends ******** themselves is what this truck was made for. I can't wait to get back to the states and get in some real desert.
Take it out some more and play with it. No ****.