I think your response sounds perfect.... I probably would have stumbled into landmine territory and said something about there still being problems despite his not drinking and opened a big can of worms that would have given him all the reason he "needed" to drink.
If your gut tells you he's looking for reasons then he probably is (to drink that is).
And whatever you do/say or don't do/don't say if he wants to find a reason to blame you for his drinking... he will.
I've really, really enjoyed sleeping ALONE since "R"AH moved out. He's here tonight and even though he will be downstairs, I feel like I won't be sleeping as well. But it's just one night- I'll survive!
Can you sleep in a different room if his snoring is really disrupting your sleep? I know that when my sleep is a mess it sure doesn't help make it easy to not let AH get to me... Not sure if this is just me or a universal. Lack of sleep='s much harder to deal with life!