For me, if i had done this i would re-set my sobriety date...it is not so much the amount of alcohol in the NA wine but the knowing that there was alcohol in it and doing it anyway regardless of the reason...
Might be worth thinking about why you would want to drink NA wine if your drinking had gotten so bad that you had to get help to stop? I.e. who's making the decision here for you to drink the NA wine you or your addiction...it is very sneaky?
Probably some may say it is up to you about your sobriety date and up to you if you drink NA wine and i do agree with that also if you dont have a problem you dont have a problem and in that case why is a sobriety date important to you at all?
Food for thought anyway:-)