To update the situation, Mackensen found "nothing obvious to suggest that the account was compromised." The pattern of users blocked was not suggestive of random activity--one victim of the blocking had been blocked by Robdurbar in the past. The conclusion is that this was an administrator who decided to burn his bridges. Perhaps he has to study for exams.
Newyorkbrad has submitted a formal case for desysopping to the arbitration committee.