As an alcoholic in recovery, I will tell you this. ANY time my husband was suspicious that I had been drinking, I had. Every single time.
Having been sober now for 2 and a half years.. I understand how ridiculous it was for me to even say I hadn't.. there's nothing in my sober life that makes me look or act intoxicated.
Have YOU ever been accused of drinking when you haven't? I doubt it.
As to the whole 'dry drunk' thing (which personally, I hate in theory/concept whatever), as I understand it, it has very little to do with someone still looking or acting intoxicated, and more to do about destructive behaviors and attitudes that continue after sobering up, because other areas of the alcoholic's life haven't been addressed.