You're digging in.  I'm not sure why.  Your attempt to make a point about apples (Sacrament of Penance) by comparing them to oranges (excommunication) was not inept; it was inapt. 
There is a New Testament warrant for the public process of excommunication. There is no such warrant for withholding the Eucharist from individuals in the Sacrament of Penance.  St. Paul imposed on the communicant the obligation to examine him/herself lest s/he eat and drink unworthily; neither he nor anyone else in the apostolic church claimed the authority to make that decision for anyone else. The historical development that transferred the responsibility for that decision from the penitent/communicant to the priest confessor is not only extra-biblical but unbiblical. The Sacrament of Penance should be celebrated in a way that respects the duty of the penitent to examine her/himself in making the decision about whether to approach the Eucharist.