I am still new to Xenforo but can you revert moderator changes on this forum software?
If you are able to revert changes, that might change my action depending on what has occurred. If I hire someone as a staff member, they are to be trusted by me and I trust their choices and also frame of mind behind actions they take.
To be fair, I will investigate fully with complete impartiality to both parties. I will formulate a response to the person involved with my findings and go from there. If I deem it not an appropriate action, I will deal with that either by making amends or reverting whatever was done to them. Regardless if the action is stuck or reverted, there will be a detailed formulation of why this was chosen.
I will debrief the team member, either outcome. I think it's important to trust your stuff and allow them the freedom to do their position but also you need to respect the members, sometimes mistakes happen. We are all human.