Kiasyd
The 1st sec. of Beng Bu in both styles is somewhat similar from the viewpoint of applications and the 2 man part.
Without seeing this tape I can’t say for sure what move you are talking about.
Is there any way I could see the video?
Did you know that in some wushu Mantis set there is a move like you described?
Maybe this is wushu mantis then! The stances are very low, compared to the what we train. I saw this video on a web site, about 4 or 5 months ago, so probably I won’t be able to find it again… But I’ll try anyway 
I remember that in the same site there were some wushu eagle claw and drunken form videos too, So maybe this is wushu mantis…
– Kiasyd