Not all individuals or businesses that provide Form 1099MIisc have an EIN to enter in the Form and use their SSN.
This is not the preferred way but you have complied with the intent of the tax code by providing a Tax ID No. If you have an EIN for your business at this time you can always file a corrected Form1099Misc. If this was a one-time event you may want to wait for the IRS contact you regarding this issue and make any changes that they require. They may or may not take any action on this issue.
It would be best to obtain an EIN if you will be issuing Form 1099misc in the future. This will ensure compliance and also help prevent identity fraud/theft as you will no longer be putting your husbands SSN out in the public realm.