It was a "translation" made by someone who sucks at translating (try the first Ys 4 SFC translation from 2001 for an example of his terrible work - not to be confused with Deuce's recent and excellent translation of the same). He was extremely rude to everybody and acted all arrogant and superior because he was "translating" it (the typical I rule because I'm the biggest geek kind of arrogance). Well, people got pissed at him so he dropped it altogether. His almost equally arrogant friends are still saying they're working on it, even though it's obviously just a lie. I don't really know much, as I don't care about either Mother 3 or the "translation", I've only heard this from people who do care.
I believe there's another translation project for it though, held by more professional people. I believe their translator is called Tomato, famous for some FF or SD translation. Don't really remember.