I just did and I seem to get the same gist each time I read it. I will attach the line from paragraph 3 that I find puzzling. Maybe I am losing my mind. Anyway, here is the line from the NR in quotations:

"At any time prior to December 31, 2013, Castillian will have the option to purchase the interest back from Ryan Gold in consideration for, at Castillian's option, either a cash payment to Ryan Gold equal to the Expenditures or 40,000,000 Castillian shares."

Assuming I am reading this properly and not missing something, I would say that if the expl results are good I see Castillian exercising the option and RYG is left with nothing. If the results are poor...