Lawsuit seeking the determination of an arbitration center, given that the one chosen by the parties in an arbitration clause has been dissolved. Admissibility of granting emergency relief to freeze the registration of the real properties that are the subject of the dispute, while it persists. Allegation that the emergency relief would exceed the scope of the final relief, which is unsustainable in view of "the great controversy between the parties" and the breadth of the judge's general power to grant interim relief: