How do you remove the spells that someone cast to the wife?

First of all, was it you that put the love spell on the man? I ask because spell removal is best done by the caster, I will not go into the admonishment you deserve if you did do it. However, go back to your original spell and reverse it. Using the appropriate herbs and moon phase.

If it was not you that cast the spell, the best suggestion I have is to have him bathe in salt water with lavender and frankincense. The moon waning in Scorpio or Pisces. I can't promise it will work completely, but it should help.