I think the FO believes that moving Ju (for what he can most likely get back) is at most likely a floor raiser but lowers your team ceiling.
As opposed to keeping him around, hoping for good Ju,( living with his warts, and hoping to be able to utilize other assets to acquire the next big piece is a more feasible path to leveling up.
An alternate explanation someone floated explanation for the length of the migrane DNPs was that RJ was concusssd.
Idk if that’s right nor if it explains his play after returning, but I find myself rooting that way; him shooting civil war numbers is not what I’m trying to see without extenuating circumstances.