Tilppi, I'm not sure who would know the answer. I thought about replying but since I don't have the information. The BP staff only check in here occasionally, I guess one of them could ask Chris. The article is pretty old, maybe only Chris or Heitor or the producer would know the answer.
You might get more responses if you posted this on the parallel LowDown forum as it's busier
http://www.musicplayer.com/ubb/ultimatebb.php?/ubb/forum/f/5.html
. . . but your quection is so specific that I'm not sure.
Maybe try to track down a way of contacting Chris directly (MySpace? his website?) - assuming he has either.
Good luck,
Phil