Hi Gigi,
It depends a lot on what state your husband wants to be licensed in . You say he had charges filed against him; was he convicted of anything? A classmate of mine in nursing school, in Indiana, had been convicted and actually served jail time. When he graduated, the BON refused to allow him to take the boards. After petitioning the BON with charachter references, etc. he was finally allowed to take the NCLEX.
My diversion experience is in CA. Nurses I have become acquainted with who had a history of substance abuse before becoming nurses have told me that if they said they were an alcoholic or had a DUI they had to do probation; if they simply said they had difficulities in life and now worked a spiritual program of self improvement, they didn't have to do anything!