Jimmy Butler likes beefing his way out of a bad team situation - bad for him, anyways. One legendary target of his beefing was the entire Minnesota Timberwolves organization.
Butler is a force on the court, and a force as a person with a big ego and bigger expectations. That meshed well with Tom Thibodeau, but didn't mesh well with his fresh faced teammates, Karl-Anthony Towns and Andrew Wiggins.
So, he did what any rational person would do - picked a fight with them and Minnesota's entire front office during a scrimmage heard round' the world (and by Rachel Nichols like an hour after it happened).