I usually use the terms "morality" and "ethics" interchangeably, and in the sense in which "X is moral" and "one should do X" are synonymous.

The extent to which you attribute differences in beliefs and behavior seems unrealistic.. Certainly, people sometimes fall into habits, aren't mindful, forget what they're doing, etc, but it seems implausible that it would lead to such wide disparities between what your conscious mind thinks you should do and what you actually do. It would mean that if I were to remind someone who professes that eating meat is wrong of their belief while they're reaching for a piece of steak at the store, they'd consider what they're doing and choose to not buy the steak. While this may be the case some of the time, it would have to happen much more often than it actually does.