Yes.
Did you already submit the application? If you have not then:
I would recommend you get a police record from Switzerland for him, to find out if he was charged and therefore whether rehabiliation will be needed.
In any case, you would have to answer "yes" to the question about him being detained, so it's best to find out for yourselves before you submit the application.
If you have already submitted the application, and have not mentioned this incident, your husband's application may be denied either for misrepresentation, or on grounds of criminality.
Btw, I would like to extend an invitation to come and join us at the Kingston, Jamaica thread, if you husband's application is going to be submitted through that office.