The chief of shop Nikolaev was dismissed

The chief of shop Nikolaev was dismissed

The shop manager Nikolaev was dismissed on the basis of paragraph 10 of Art. 81 of the shopping center, the district court, where Nikolaev appealed with a complaint about dismissal, reinstated him at work, as Nikolaev allowed only one (true, gross) violation of labor discipline. The administration did not agree with the decision of the district court and appealed against it.
Was the workshop director fired correctly?
In whose competence is the consideration of this labor dispute?
How to resolve it?

Additional information:

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