I know what you mean - because I'm on the other side....I do stuff like that all the time to my mom when I visit. Try to do it a better way (ie, my way!) and usually her way is the best. I feel rotten when I realize what I'm doing, and my mom is nice enough (and patient enough) that she puts up with me! Maybe a gentle reminder to your DH is all that's needed. My mom tends to tell me that she's spent a lot of time figuring out what works best and so I should back off

Maybe that might help?