I read that article as well. However, it's just a theory. It's definitely not the prevailing consensus.
Secondly, caterpillars do in fact have the genetic layout for everything they need to metamorpihize (spelling?) into a butterfly. The organs are all there, just stunted by hormones (insert joke about them being trans here).
If the overwhelming consensus is that an animal's life cycle doesn't necessitate that it always be physically identical to every other stage, there is no basis for arguing a human is somehow not human at some point. We delineate stages of growth for reference purposes, but at no point does it undergo a sudden and whole transformation at any level, be it genetic, bodily, or mentally.
And finally, a question for you; if it's not human, and taking into account its unique DNA, then what is it?