Ever see this before?

Hey fishy folks.
On another newsgroup I belong to that is strictly Bettas, there's a
member there who tells me that he has seen male Bettas show *vertical*
barring for submission.
I'm not talking about juvie males, as juvies show horizontal and
vertical barring at times for no reason. It's like a toddler blabbing
on and on and never really saying anything, just noise.
Anyway, I have been trying to ask the guy more about this and another
person (a moderator actually) keeps ripping on me like I'm off the wall
for asking this guy questions about it.
I'm asking everywhere I visit or post to if anyone has ever seen this
before.
In nearly 30 yrs I haven't seen it or heard of it happening, so
obviously my first question to "Phil" was (in a nice way), whether he
possibly got vertical and horizontal mixed up. Believe or not, even
adults get them confused sometimes. So, understandably that was and
should have been my first question to him.
After finding out that he didn't, and that he's been in the hobby and
breeding for 50 yrs, I was assured that ok..he's a big breeder for many
years and I can trust the what he is saying is right.
Now I'm trying to find out more about why I haven't ever seen this, and
why his are doing this.
It's a shame one of the mod's at this other group is being a jerk.
I mean heck, if you kept and bred a certain fish for nearly 30 yrs and
somebody who's been doing it longer than you and by much more volume
than you...has seen an entirerly different body language on his
fish...wouldn't you be filled with questions and want to learn about
this?? I sure as hell am!
I feel like I woke up in bazzaro world. = /