Lifting a communal ban

Hi,

Where a Rabbi decrees that a community member may not be called to the Torah, but then the person ceases the sin that had led to the decree, then others may rescind the ban. Those others need not be on the level of the sage who had issued it in the first place. Ideally, this should be done by three men convening as a beit din, because the decree might be considered the equivalent of a formal ex-communication.

(Rav Moshe Feinstein, Igrot Moshe Yoreh Deah 1:221)

Have a good day,
Mordechai