As far as I know, the gist of the incident was that Kei was given a weapon and was seemingly instructed to attack Wolf. The problem is that the person who instructed him wasn't a staff member, it was Dickson's partner. Technically, they're fighting staff.

[Dojima grimaces]

Rhys and Angel got collars tied to their necks. If one was hurt, the other would be shocked. If one died, the other would die too.

Rhys was turning out to be the main suspect in the most recent trial, and it was thought staff put a collar on him as a way to have Angel as a hostage. I suggested to everyone both Rhys and Angel weren't staff members, despite Rhys actually murdering someone.

[He sighs]

And then Rhys opened his mouth and nonchalantly confessed he was a staff member.

[It was embarrassing for Dojima, really]