Some notes from the bamboo song sounds the same with that of the Pantera piece, but not totally similar. I believe this is just a coincidence. I have seen Ira Cruz play some improvisations at some jam sessions in a bar somewhere in puerto galera, he is definitely not a metal guy. His playing does not even show hints of any metal influenced riffs.
Not a bamboo fan, but to be fair, I am sure this is purely coincidental.
How about singing the chorus to Incubus' wish you where here to the chorus chords of their latest hit, KAILAN.....But again I am sure this is still a coincidence.