Help appreciated: I have to translate this paper for summer school?

Question

En espanol"
El destino o la brillante idea del jefe de la legación mexicana Don Matías Romero evitó que se perdiera la isla o quizás toda la península de Yucatán, que en un momento estaba en la idea del negociador Goiguria.

My translation:
Perhaps, it was destiny or the brilliant idea of the head of the Mexican delegation, Don Matías Romero, that circumvented the loss of the island or all of the Yucatan Peninsula, in one moment in the idea of the Goiguria negotiator.

Answer 1

Either destiny or the brilliant idea of the head of the Mexican delegation, Don Matias Romero prevented the loss of the island or perhaps the entire Yucatan peninsula, that suddenly registered in negotiaor Goiguria's mind.