I've just tried this out with a modern version of Three.js and got an error around line 142...

uvs[ (3 + rotateBy) % 4 ].x = (tileU * tileUvWidth + w * tileUvWidth)

I'm guessing the mesh building code has changed in three.js and it breaks the UVs somehow - but I don't really know what I'm doing so I couldn't work out how to fix it. :( It still works if you disable uv mapping, but then the man obviously looks retarded.