No Tony say it aint true!
Tony Jaa pulled a Dave Chapelle and walked off the set of Ong Bak 2 all stressed out before it was finished. There is all kind of rumors flying around on what actually happened. Please Tony dont throw your career away when you have so much ahead of you. Heres the article about what happened.
http://www.kungfucinema.com/?p=2594

Heres another cool article on who are the next upcoming martial arts stars to take over for Jackie and Jet Li. To read that click here.