i agree with mantiskilla, sounds like a poor reason to join and organization. I think Yao left, i don't think he was kicked out(i may be wrong)
What forms do you like? If it stuff you see in tournaments, most of that is thrown together, usually not the real form.
If you plan on leaving Yao, just ask him if he will teach you the wah lum forms, if he gets mad, you didn't lose anything because you plan on leaving anyway.