Adulterous Teachers: Can Someone be Permanently Disqualified from Teaching?

Recently there was a teacher, well-known in the blogosphere, who posted a confession online that (1) confessed to the sin of adultery and (2) stated that the individual was in a new period of life that did not involve leading others.

But then the post mysteriously disappeared.  You couldn’t even find a cached version of it.  The internet had been scrubbed clean (although I did manage to find a copy).
And now this person has, for all intents and purposes, resumed teaching online and is, within a few months of the confession, one of the most popular bloggers in the blogosphere, once again in a position to lead many people.
And so I have a few questions:
Can someone be disqualified from teaching–even on online?  Can someone be restored to a teaching position if they have confessed and repented?  How should that work exactly?


Source: Orthodox Messianic Judaism (http://goo.gl/tTgTQM)