User blog comment:William Wartique/wall of flesh/@comment-90.145.108.101-20111230183357/@comment-4674838-20111230233215

You are mistaken. The direction the Wall of Flesh approaches from when summoned is determined solely by where the voodoo doll fell into lava with respect to the world spawn point. Voodoo doll falls in lava east of the world spawn = Wall of flesh approaches from the east. Voodoo doll falls in lava west of the world spawn = Wall of flesh approaches from the west.

I realize that what you said is what is currently written on the Wall of Flesh page. That information is wrong. In fact, the Wall of Flesh page itself needs a lot of work done on it. I will probably clean it up sometime when I have the chance.