Yeah, people who do carb cheats are usually strength training and have lot of data on how their blood sugar changes in response to diet and exercise. Their glucose and protein requirements are very high and they go very low carb with depleting routines before they cheat to specifically jack their blood sugar and insulin. They specifically time their cheats so they are not taken out of ketosis.

It's become a popular bro-science diet so take that for what it's worth. One day of moderate (100g) of carbs won't hurt I think but there is no reason to think that a lack of carbs is causing you to maintain weight. 1-2 pounds loss per week is what you can expect on Atkins and water weight can move +/-1% so not seeing the scale changing for a couple of weeks is no big deal. I'd suggest doing what you've been doing for a few more weeks before trying to change it up. Don't overload the changes and obscure what is normal. It may be you're just jealous of the weight loss you had during induction which would lead to trying too hard and then messing your thought process.