hi charmed,
im sure your husband does not think you will go back to the cult. im sure he knows better. he probably just made this remark in a moment of anger without really thinking it through. im glad he apologized. hopefully he was sincere, you can accept this apology and move on.
it seems to me that there is an issue of what the proper role of a wife is -- since you at one time told him you wanted to be submissive, he may be reacting if he perceives that you now want to change the "rules". you need to find out exactly what you are feeling and then communicate. talking it out will make both of you feel better.
unless this remark becomes a repeated pattern, it is not even a blip on the radar. you will get through it.
best wishes, nowisee