So I'm taking this matter to grassroots level, so that any problem like that should be made known before the UTAUloid is exposed to the community, at which point name changes are not practical anymore.
To fix that, me and Damesukekun, a Japanese linguist hanging out in UTAU Wiki, are trying to come up with some sort of guide so problems like that are prevented from the beginning. But it's not perfect, so we need a bit of help. It's for your own good too.
http://utau.wikia.com/wiki/UTAU_wiki:UTAUloid_Naming_And_Profiling