So, the dev team is not even capable of using proper security measures to secure their own accounts. Are you sure that they have enough knowledge about security that they can develop any working "true" anonymity solution?
Honestly, I don't think that you had anything with this rogue dev and nobody can blame you for the actions of this dev. However, the dev team can be blamed for not taking appropriate security measures when this rogue dev thing happened.
RE: The Rouge Dev.
Psychopaths and many other disturbed, corrupt highly
intelligent people have some incredible abilities
to put on a persona till they get what they want.
20/20 hindsight is the easiest game in town.
It IS useful IF you are going to do something actually constructive with it.
Speaking about good management skills, it might be best to PM some Competent Constructive Criticism
Directly to those whom it would do the most good.
Not continually air your and everyone's dirty laundry...
It's called beating a dead horse and does no good as it's been addressed numerous times
of which the team is very well aware...