There's been a pretty clear divide in the Athletics Administration since Marcus got here. That's not entirely his fault. Lots of people on that staff were Rass/Butch/Sarver/Brace fans who were very disappointed when Rass' retirement didn't result in an internal hire.
You can have mutual respect for someone, understand the roles one plays in an organization, and not have a great personal relationship. This is a nothing burger, IMO.