instead of seeking ordination, why don't you speak to the abbot of the temple in Fang where you are currently volunteering at? I believe they might be able to help you apply for a working(?) visa to continue to stay there. I know that there are options for the temples to apply for foreign teachers to teach in their temples, so if the temple you are volunteering at is established enough, getting a visa shouldn't be a problem.
~ swimming upstream is tough work! ~