Marriage to a Convert from Judaism

After 9 years of marriage does a Rabbi recommend divorce if one of the spouses declares to be converted to another religion, even if that spouse respects and keeps jewish traditions like: kosher kitchen, Shabbat candle lighting, holydays etc.

If the converted spouse cannot be persuaded back to Judaism it is right to divorce, though I might have suggested a different solution if I had known the case in detail. Rabbi Zalman Baruch Melamed