It wasn't until after I quit that I found out how close my wife was to leaving me to my disease.
Lucky for me I quit first. I cured my disease by deciding to never drink again, I really don't think my wife cares about the disease aspect , she just prefers me to no longer be a drunk with no chance of becoming one again. And that is an expectation every spouse deserves to have, yeah?
More booze is the decision he will make, but if I were you , I'd at least explain my expectations. His 'disease' will love to hear that you may give him some leeway in any 'attempts' to cure it.