Yes definitely. You can see that the posture looks like the Alidha/pratyalidha standing position... But if you look them from the back they look seated and I have not been able to find a seated posture that look like that. You know that all the posture have their meaning (like almost everything in the keris). I find strange that such an important part of the kriss would be sculptured always the same way without a good reason.
I've been through an interesting study about durga
http://www.asianart.com/articles/durga/
and as you'll see in the postures the right foot is almost always upper than the left. Is this the model?