Edit might come! Of course his chest will go down a few pixels, I mean that was the point - making the chest go down a few pixels without shortening the spine per se!
I actually didn't really mind the quick-version you've done as long as you'd animate it properly in the end, I was merely building on souly's crit. However, it's way past bedtime for me, so if I make an edit it'll come later!
Also please don't be too discouraged by the strikes, they're more or less a reminder for you to try and focus on your art and art alone. I recognize that some of the crits that've been given in this thread have been given in a harsh tone, but when you snap back, people get irritated because they think you don't take them seriously and voilá, suddenly the tone you'll encounter will be even harsher and non-considerate. If you feel unjustly treated or want to vent, I'm available for PM!
Here's hoping we can all continue this thread in a well-mannered ... manner : D