Hm....

I am a very strong willed person in a vanilla setting. Even my Master was shocked at me admitting that I was a sub. He was sure my name should have Mistress in front of it. Even now I slightly rebel. I give the look of "fuck you" and tend to walk away. I wouldn't say I'm a bratty sub though. It's just a slight struggle.

I think that since you are aware of your actions, maybe you can stop the D/s scene before you snap. Like acknowledge how you feel right before the moment of uproar and stop right at that moment. Maybe even implement a "safe word" to inform your Dom that you are feeling like you are overwhelmed or uneasy with his dominance. Then once the word is said, you can either stop all play or just take a 5 minute breather.

I hope you are able to over come this I feel that BDSM is something that can really enhance life. It adds that twist of excitement.