A. shias taub who?
b. there is a far cry between being your spouse's mashgiach which would be counterproductive and saying that your spouse's yiddeshkeit isn't your problem unless it effects your kids
c. the fact that line can be said with out any sort of protest and a lot of what else is being said in this thread is so so sad. we have created a different sect. a cultural Judaism not much different then reform Judaism just with emphasis on different things that are or aren't important.
It's not only with spiritual matters.
When asking advice about anything relating to men, I pretty much always get the same answers that give me the idea that men are too fragile. You can't nag, or even ask them to change.
All you can do is reinforce positive behavior (but not so much so that it feels contrived or adds too much pressure) and / or change your expectations.