Re: honorary dan ranking
I've heard several stories from friends about honorary-dan holders (usually shodan and nidans) who suddenly act like shihans, even during seminars with real shihans present, or during regular classes with higher ranking yudansha. Maybe the first post was refering to these kind of people?
I think that it isn't common, but it happens...
Other than sometimes being an annoyance, I can't see anything really wrong with that.