Like Blondie, I left an apostate organization. I consider myself now to be enlightened.....saved......from a hell-on-earth existence as a jdub. When I come to think about it, leaving the WTS is kinda like being resurrected to a real life.
Yes, it is an apostate organization, just as Christianity is an apostate teaching from Judaism. You're still technically an apostate if you leave even an apostate organization. But it's not necessarily a bad thing. The word apostate has nothing to do with which point of view is right or wrong, only that a person is no longer affiliated with a particular group.
The term as used by the Witnesses is inappropriate. The thing is that the Witnesses try to make "Apostate" a special term that carries a significance that the word simply does not mean.