Sean Pendergast had Richard Justice on 1560 yesterday, and found this out:
Richard Justice of the Houston Chronicle, just after talking on the phone to Astros' employees involved in the decision, said on my radio show that Arnsberg's behavior and attitude over the last few weeks had become increasingly difficult for the club to deal with.
And it all came to a head in the dugout on Monday night when Arnsberg openly argued with Mills in front of the players. Behind closed doors, we might call that constructive conflict. In front of other employees, we call it insubordination.
Yeah. You can't do that.