Rav Chelm based his ruling on the halachic response to child molesting. In those cases, if there was no abuse for three years and the offender expressed regret he is assumed to now be safe to work with children. This is even true if he was not subjected to public humiliation, expulsion from town and forfeiting money…
Many in the community were outraged, but they were warned not to say loshon horah. Besides, they were assured that rabbis “would keep an eye out him” just as they do with repentant molesters.
‘We Don’t Sit Seniors in the Sanhedrin’ (San. 36b)
The Seforim blog is in the middle of a reconstruction, so the link won’t work for the time being, but Dr. Marc Shapiro once wrote a fascinating article there on the dishonest biographers/translators of Rabbi Elyashiv.
The original biography in Hebrew truthfully describes his negation of all interpersonal relationships, including his own close family. The “adapted” English biography, on the other hand, well-aware of the culture difference, omits many of these stories, and even adds the new and contradictory claim “Rav Elyashiv’s family members held back from him because he would care too much“.
Source: Rationalist Judaism, titled “And Man Made Godolim In His Images“.
I didn’t see the original article by Marc Shapiro, but I have independently heard this claim made elsewhere of the English version. Needless to add, the true facts are known.
UPDATE: Here is the new link.