Emergency relief action filed to prevent Companhia do Metropolitano de São Paulo - METRO from initiating administrative proceedings and imposing sanctions against CORSAN until an arbitral tribunal renders an award on the dispute arising from the administrative contracts. Initial decision granting the injunction, subsequently subject to reconsideration. Maintenance of the reconsideration to the effect that "arbitration clauses and their application cannot function as a mechanism preventing the respondent (Metrô) from exercising its [police] power, since, among other aspects, it conveys an unavailable public interest":