I'd hate to rewake this monster argument but i think this is really what it's getting down to.
By definition of ego-loss, that 'i' must not exist during the experience. In times when it distorts, changes or whatever you may not realize it's you, in which case i still think you do have a sense of self as you still maintain some awareness. The ego can be distorted to a point in which one no longer recognizes it, this will be a special case that I haven't figured out yet.
1st. case - this is true ego-loss, this rarely happens on psychedelics or through other means; the sense of self is removed temporarily.
2nd case - self of sense is distorted; this is a form of ego softening, which is quite common on psychedelics
3rd case AKA The Ismene Case - the person was really fucking high and confused, scared, frightened by an intense experience.
In Ismene's defense the majority of people who claim ego loss will fall into his category. The more enlightened into 2 and the ones who can't remember a good damn thing but are pretty sure something profound happen, end up in 1.
Each classification also varies in frequency from top to bottom, 1 having the least frequency in users, 2 moderate frequency (especialy on high doses of breakthrough drugs) and 3 for the douches who get high one time and are so amazed by it that they consider it ego loss for whatever personal reasons.
I think we've made progress here.