A suggestion: stick a note in said Spoiler forum that you don't support or condone a language hack and that the forum is there specifically to keep spoiler questions out of the general forum population. You don't actually have to allow the threads to remain open if you don't want to, either. Once an English version is released, you aren't going to be able to tell the difference between them anyway. It'll make it somewhat easier to keep track of the messages (and those that are posting them).
In other words, there'd be no difference between having the messages posted here or in another forum with the above note except that you save folks like us who are patiently waiting for the game from being inundated with spoiler info.