This is a false statement - he has kept no one from the Sacraments. The parishioners were requested to go to a different parish for Mass, etc., pending resolution of the issue.
It was the board members, alone, by their actions and scandalous behavior which necessitated the interdict.
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When a member of the Church has knowingly, deliberately and publicly damaged seriously the unity of the Church, his or her bishop has the pastoral responsibility to impose a sanction, in order to call the offending person to repentance and to restore the unity of the Church.
If Church authority were not to address a public violation of Church unity, then scandal would be caused by those who present themselves as devout Catholics, when, in fact, they are not in full communion with the Church.
In the case of St. Stanislaus Kostka Parish, the offense committed by the members of the board of directors of the civil corporation of the parish is the public refusal to obey legitimate Church authority, namely the Holy Father’s Congregation for the Clergy and the archbishop of St. Louis, and the incitement of others to such disobedience. The applicable canons of the Code of Canon Law are canon 1371, paragraph 2, and canon 1373.
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Furthermore, today the Archbishop established a parish for those of Polish Heritage. It is a beautiful Church and one which will be not be in schism.
That's a good thing, since he's lost St. Stanislaus.