In the interest of keeping what is essentially a tangent out of the actual Magistrates case, I've put this in the Q&A section.
In the interests of timely resolution of the case. Other people shouldn't be penalized and have their case resolution delayed for a week or more because of this person's actions.
If he messes up again, he will get warned and muted again, and then he can argue his case with the Magistrates via PM. Or not, as he chooses.
Is there no way to either limit his account's access to the Courthouse only or just
temporarily return his rights?
I think Tom is right that he earned it and shouldn't be let off from that by committing another offense. You don't release a prisoner because they commit a crime in jail. (Overblown example, but I'm low on creativity tonight.)